Send in your mainboard for repair! nickselectronics.com/products/xbr-75x850f info@nickselectronicrepair.com 520-838-9359 Contact form on our website: nickselectronics.com/pages/contact
Man this guy totally saved our TV from having to be replaced, changed the main board on A Sony Bravia totally worked thanks man your videos are big money savers
These guys have been very helpful with helping me fix this exact problem. They helped me decide which board to send for the fix, and then kept me informed of the testing and work being done. I just received the board back and the installation and pairing was exactly as they described. So much cheaper than a new TV. I would highly recommend these guys.
Thanks for this video. I was able to follow it along for my XBR-55X900F, and every step led to the same result... the main board. Sending it your way! The only part that slowed me down was disconnecting the wires to the board. There was one style I haven't seen before, the two going to the TCON, but I was able to figure it out. The two little black buttons on the edges need to be pushed down, for anyone that might get stuck on that. Thanks again!
Hello Nick, Yet another excellent video 👍 Sony has know about these terrible eMMC chips for years and have still not come with with a better more long lasting solution. On cheaper lower end branded mainboards (for example Vestal), if there is an issue you can just say oh well it was a cheap tv so lets just buy another one. But these Sony Android TVs are not cheap, nowhere near cheap so all these eMMC issues are just ridiculous and gives Sony a bad name when it comes to TVs with eMMC issues. I repair TVs as a hobby (as well as upgrading already good audio equipment internals to audiophile sound quality), I'm actually a self employed software/app developer and my house is full of Sony Android TVs. One of my TVs I had to replace the eMMC and that was not fun for me to do. We actually only ever use 4K Chromecasts plugged into all the TVs in our house as using the apps on our mobile phones and then clicking the cast icon is much faster than using the tv remote with the built-in native tv apps. Anyway keep up the great work and videos 👏👏👏
Thanks for the comment peter, I am glad you like the content. I personally like using the firestick on all my smart TVs it's much faster than the built in system for sure, regardles of it being a Sony, Samsung, LG or other brand.
Hello Nick! Months ago I talked to you by email, I asked about sending an eMMC chip for the Brazilian model XBR-70x835F. I bought a new board from Sony and the TV is working. Thank you for your help! The defect of the old board is definitely the eMMC chip.
Nice that's good news! Glad you got it back up and running. Yeah sorry we get requests for chips for the Asian, Europ, and south american versions of the models all the time. The problem is that the mainbards for those are designed differently depending on which area of the world the TV is going to due to different regulations and systems for those countries. So the software is different and we don't have those. But I am glad to hear you got the set fixed and working again! Sony TVs have some of the best picture and are definitely worth fixing.
Hey Nick, I followed your guide, after wiring standby 3,3V to the regular 12V I only received 3,3 v and not the regular 12 v (compared to what you got, in your example) Does this mean the issue might be related to the power supply ?:-) Great vid!
Thank you for sharing all these videos on troubleshooting! My XBR-55X850A (non-android tv) recently shut off by itself, I was able to turn it back on for like 30 minutes, it then shut off again by itself, ever since, it wouldn't turn back on, now I have no power, no standby light, nothing. Following some of your videos on how to check voltages, I got the standby reading 3.3V, all REG12V pins read 0V without the mainboard plugged in, but with the mainboard plugged in, the REG12V hovering just above 9V. Do I have a bad power supply or the main board? Thanks!!
@@NicksTVRepair Really appreciate your reply! You are a great man! I wasn't giving too much hope for you to respond to an older video, so I actually took the chance, got a power supply board, and it did the trick. I know the tv set is old and probably worth nothing now, but I really hate to throw away a giant piece of tech in the landfill, only because of one small part or the faulty PS board in my case, and I bet you could probably fix the PS board by replacing a transistor or whatever the part may be. So, for what you're doing is actually saving the environment, keep up the good work! God Bless! Wish you do good with the business! Thanks again for all your video uploads!!
Hi Nick, great videos!. I have a Sony Bravia XBR-55X700D which doesn’t turn on. I checked the power board for the 12V and the 3.3V standby and they were ok. At this point, I am not sure if the power board is 100% fine. I have not tested the main board because I don't know how to do it. What is your advice?
Hello, Based on the information provided it sounds like your power supply is fine, you are getting both the 3.3v and the 12v. If the power supply was damaged I would expect one or both of those to be missing. It is incredibly rare for the power supply to fail, 99% of the time the failure is with the mainboard. If you really aren't sure and would like to have both tested, you can send us both of your boards. We have a testing/diagnostic service available and we can test the boards for you. We also do offer a flat-rate repair service for your mainboard. The mainboard repair service is below: nickselectronics.com/products/xbr-55x700d The bench testing service is linked below: nickselectronics.com/products/diagnostic-and-testing-fee
I have and XBR-65900. It went completely dead as described here. Wouldn't turn on no matter what. Had he main board replaced and it worked 100% perfect; however, I noticed the very most subtile differences in the main TV GUI, and while some smart apps worked (UA-cam, Disney+), some did not. Netflix gave a UI-800 error and HULU gave a PDEV-320 error. These potentially indicate a hardware error. Trying to find out if my board is somehow not compatible with something related to the network on the TV, or if the main board is just bad. So frustrating.
This is not a hardware error, it is an error due to licensing. There is no way to fix this. You will have to use those apps using external devices such as a cable box, Firestick, Roku stick, Apple TV, chromcast, or other similar streaming device.
@@NicksTVRepair I would suggest people always use something like a Firestick rather than another product for streaming because manufacturers don't seem to bother supporting these things. Android TV might be an exception though but some random smart TV or set top box probably not
I have Sony TV XBR49X800E doesn't turn on at all for unknown reasons. I replaced a power board, nothing turns on. Black screen, no light signs on main board. My question is what thing is responsible for not turning on. How to diagnose main board, T-Con board, a thing for standby. No light in standby when plugged in electricity.
If you follow the instructions in the video, it will show you how to determine which board is at fault. The T-con is in charge of providing data to the screen, which has nothing to do with the TV turning on. If you were to remove the T-con from the TV you would still be able to turn the TV on and off, but you wouldn't get a picture. The power supply and mainboard are the only 2 parts that can cause a no-power fault. 99% of the time the mainboard is the one that causes a no-power fault. To confirm this follow the steps shown in the video.
@@NicksTVRepair I tested the main board Sony TV XBR49X800E, I found that two of pins where to connect to the power board no resistance, what should I do to know where the problem is?
I am sorry but I don't understand what you are saying in your last message. My original statement still stands however, your mainboard is most likely your fault.
You can use a different brand eMMC but it can't be a smaller capacity. I think you can go higher, I don't actually know, my tech would but he is out for the day already. I think typically we try to stick with the same capacity.
Hi Nick, Just found your video. I'm trying to fix my Sony tv with no power issue. I have 2.6v on a STBY3.3v. Also I haven't got 12v on pin 25. What would you say it's the problem?
If you disconnect everything from the power supply and power it on do you still have 2.6v on the 3.3v standby line? If yes then you may indeed have a defective power supply but that is very odd and more likely that your multimeter is out of spec than the power supply. If you had an issue on your standby line I would expect 0v or oscillating voltages, but not a low voltage output. A no power issue on a sony TV is 99% of the time due to a mainboard fault not power supply.
Hi, great stuff. I have the same model (800h instead of 850F), and i get no screen, but power, sound, and backlight is working. Any suggestion on how best to approach fixing? If i had to take a wild guess, the mobo needs to be replaced? Could it be anything else?
I have to admit, I haven't worked with the 800H much so I don't have an answer for you on that right now. But if you are getting backlight and sound we can rule out the power supply and LED strips. You could have a fault with either the Mainboard, T-con board, or the panel. The T-con and mainboard are the only parts that you can replace so I would suggest replacing both and seeing what happens.
I have a 10 month old xr85x90k that randomly blows my ckt breaker in my box. The power board was replaced and still does it with nothing else on the ckt. What do you think?
If it's 10 months old it's under warranty and I would recommend having it fixed under the warranty channels. But also try plugging it in in a different circuit in a different part of the house and see if the issue persists. If the TV works for the most part then the issue is most likely not with the TV but with the plug, the breaker box or wiring between the plug and breaker box. If the power supply was drawing enough power to trip the breaker then something would have caught fire or shorted out in the TV and it would be very obvious.
Thank you for your video. I'm only getting 11.23v for tcon. Is that normal? I was also wondering if I could do a similar test to see if the back light comes on. Thank you!
We have a KD-65X75CH that is not responding to remote control functions. We have reset the TV, bought two different remotes and new batteries for the remotes. Nothing… Now the TV is stuck in the Welcome screen with the selection of languages to choose from for the setup. Any thoughts on what it could be?
It is very rare to see these power supply boards go out. I have only seen one go out before which is why I did the quick little check to confirm it was good. It will be very hard for me to get content out for that repair since it is so rare to see these go out, but next time I encounter one ill make sure to do a video on it. I don't think we even fixed the one we had encountered that was defective at the time since replacement power supply boards were very cheap at the time, it made more sense to just replace it.
great video, I have a dead 55x800h, I checked the 3.3v and 12v were ok but no TCON 12v, I jumped the power on and icon on with 3.3v and tcon 12v was there. so power supply was ok I guess my issue is the main board. my question is after replacing with a new board, does tv need to be software upgrade or restore it for the new board? is the board compatible with different size? like a 55x800h will work with a 65x800h? will still need a software restore after installed? or if I send you the mainboard do I need to restore the tv software or after the repair is just plug and play? thanks
actually I just fixed it by changing the mainboard. I was able to find a 65x800h board, the tv works fine now, the only thing is that after I reset to factory, it shows 65x800h, any way to flash or upgrade to become 55x800h I know I can just change the name but any way to do it permantely? thanks
I have a 900F that has the same issues. No power on TCon 12v. I did notice the power supply smelled of burning electrical in the bottom left hand side the the power supply. And some noise coming from the mosfets. I’ve had the main board replaced once.
The 900F is a little bit different but the same diagnostics still apply. If you are able to get the normal voltages to the mainboard such as standby, and all the 12v lines from the power supply then it means the power supply is good and the fault is the mainboard. If you aren't able to get the voltages, then the power supply is at fault.
Hey great work by the way. I've just purchased a Sony 65xg8505 looks identical to the one your working on. I'm getting 0V from all the outputs on the power supply no 3.3V no 12V I have 240V going in and I can find voltage all over the power supply board at various points. I've disconnected the main board and T-con incase that's causing no voltage on the 3.3V put no luck. Do you think power supply or main board ?
9 times out of 10 a dead no power fault is mainboard as shown in this video. But if you are not getting any output voltages from the power supply even with the mainboard disconnected, and you are sure you are doing the voltage checks correctly, then you have a defective power supply. Try checking for shorted diodes first, most Sony power supply boards fail with shorted diodes.
@@NicksTVRepair many thanks for the help I noticed you do some BGA reballing aslo I've reballed a few PS5s. Interesting regarding the Shorted Diodes I will check that later this evening. If I don't find any shorts I will most likely check out the IC and replace
@@NicksTVRepair You where right I found a SB260 60A 2A diode shorted. Out off all off the Diodes I own I can't find a match only rectifiers no Schottkys typical haha. Update replaced the SB260 with a similar value only difference was 5A instead of 2A it works ! Many thanks if I can donate to your channel I will 🙏
Also do you know any good reputable websites to purchase pcb parts for tvs? The usual one I keep seeing is encompass. Not sure if I trust eBay. Thanks.
TV parts today is pretty bad in terms of quality parts. They send defective boards half the time. eBay is also pretty bad as well a lot of sellers with defective boards. Encompass is a good one, so is Shopjimmy, but more importantly if I offer a repair service then send it in! I am the most trusted seller :)
@NicksTVRepair, my standby voltage is reading ~3.4Vdc, REG12V is ~ 12.3Vdc, my TCON_VCC12V stays at 0VDC. I disconnected the power to the main board and TCON, jumped my standby voltage to POWER_ON and TCON_ON (verified ~3.4Vdc on standby voltage, POWER_ON, and TCON_ON) however my TCON_VCC12V remains at 0Vdc and my REG12V remains at ~12.3Vdc. Any recommendations on where to check? Would sure be nice to have a schematic for these boards :D
If this is correct you have a bad power supply. However I have never seen this before where only the T-con 12v failed. Are you sure your jumpers are correct, please double check. What symptoms are you seeing on your TV set? Usually that is a better way to diagnose the set than doing voltage checks.
@@NicksTVRepair Thanks for the response! I tripled checked the jumpers and verified they were correct. Symptoms of the TV is that there was no standby light, display not powered on, no change when trying the power button hard reset or the remote reset. I've ordered a replacement power board and will let you know the results. Wouldn't be surprised if it turns out to be the main board, but the PS replacement was cheap so it's worth a shot at the cheaper repair. Thanks again!
@NicksTVRepair I received the board and swapped. Symptoms were the same, so i tried the 3.3V standby jumper via a 1kohm resistor in series with the Power On and TCon On. With the jumper in place and 3ish volts verified on standby as well as power on and tcon on, the tcon 12v power stays at 0 AND the 12v Reg rail drops out to 0. I replaced the original power board and it is doing the same thing (tcon 12v power AND 12v reg goes to 0). Would this be a problem with the TCON board or still related to Main board?
Scratch that, there is no power path to the TCON board and the power harness output is demated so that wouldn't make sense. Ringing out the power harness to check for shorts on the TCON power lines.
Resolved the issue, it was the mainboard. Not sure why I couldnt cause the power board to enable the tcon 12v using the jumper technique but no worries now that the TV is working.
No standby voltage typically means you have a power supply failure. That can be caused by any number of components such as shorted diodes, ICs, or a resistor that could have failed open. For that, I would need to do a more in-depth diagnostic. If you did want to send in your power supply for us to fix, we do have a flat rate service which I will link below: nickselectronics.com/products/1-474-732-12-850g
Hello, I got a xbr-75x850d for free guy said it was working and just turned off. No signs of life. Never seen a tv with 2 power supplies 🤔. I tested for 12 volts I see that, however on the standby light I get a reading of 9.4V and when I tested pin 27 going to dps board I have nothing. Would this be the PSU or main board?? Thanks
Connector CN6401 pin 27 is 12v lines to T-con, it should only show 12v when the TV is on. So if your TV is not turning on then that is normal for it to not show 12v. What you want to check is pin 5 which is the standby voltage. It's on the lower row so you have to wiggle your multimeter lead in between the wires to get a reading on it, but if you do get your standby voltage then you can almost certainly rule it out as the fault. Make sure you look at the legend to identify where pin 5 is on the connector. It's the third pin from the top on the lower row. If what I am saying doesn't make sense, just look at the legend and it will visually show you where it is. it is very rare for that power supply to go out. 99% of the time the mainboard is the one to cause a no power fault.
@@NicksTVRepairthank you so much for replying! Everything you said does make sense, when I tested standby voltage I’m getting 9.4 which is weird right? In regards to what you said about PSU that it’s rare for those to go out, I believe I can safely say it’s main board. I will purchase one and report back for anyone having the same issue. Although this main board on this model tv is a little expensive! 😂 but hey it was a free tv! Thank you once again! You gained a new subscriber!
@@NicksTVRepairyes it did work! I purchased the main board from china, so the android os is a little different, but I just connected a firestick because there was no netflix and its working flawlessly! It was a free tv so can’t beat that. Thanks for all your help! I might try and repair the original board. You wouldn’t happen to have the os to write onto new EMMC chip?
sony kd75x85j just went out this afternoon when i got home.tried to turn it on and nothing no led standby light just a black screen.any ideas on what it can be?hopefully its just the power supply board.any answers will help thanks.
This is a very advance repair that requires advanced tools and skills. I do not recommend you try and replace it yourself unless you are a trained technicians who already has the tools and knowledge to do this repair. This is why we offer a flat rate mail-in service with a 1 year warranty. In fact a lot of our customers are TV technicians, because they know this is a very advanced repair, they don't want to risk damaging the circuit board beyond repair. Most electronics repair shops are set up for a lot of soldering work, but they are not set up for this type of soldering as it is more advanced and requires a lot of training and know how.
Here’s an interesting question. Just got a 75x940e super cheap, but the screen almost misplaces pixels. At first it was in the form of a line and now it’s pixels scattered about. Very random and not all the time. And also in the settings menu it thinks it’s a 55 930e. Any idea what might be going on?
Hello Luke, I believe we already spoke via email. This is most likely a mainboard fault, however we don't service those due to very low demand. Per my email we can fix it or at least provide you with a replacement but would require some assistance and parts from your set to do so.
@@NicksTVRepair yep it was a main board something with the emmc. Not sure why it thought it was a different model unless someone tried replacing it with the wrong part so I swapped the board and good as new
My xbr 55x850g was dead one day 3yrs and only 100 hrs, always a true sine UPS for power. No voltage on the power connector. Removed board, I checked the caps, fuses (look like diodes no markings), and all diodes,all good but one diode 2amp/60v. Its lower right on the board. Replaced and badda ping batta boom! up and running.
Wow awesome! I have seen many 850G TVs come in to our shop for repair and so far I have not yet seen one with a power supply fault, I guess it does happen then. Nice work on figuring it out!
Hey Raj, Yes we were thinking of doing a video where we review some of the most usefull tools we have and use, which would include the mainboard tester. That video is probably a couple more months out however. This mainboard tester shown in the video is for standard and HD 1080P TV sets. The model number of the device is TV160. You can pick it up for about $145 on eBay or $125 from Aliexpress. There are others that work with both 4k and 1080P Tv sets which I would recommend getting over this one, however this one is much more affordable than the others. The 4k ones are closer to the $300-$400 mark. We might try to do a bulk purchase from a chinese vendor and retail them at a more affordable price on our website at some point in the near future, but we aren't at that point yet. When we do, I will most likely make an annoucement on the channel about it.
@@NicksTVRepair but some are stack as they'd be glued together. I don't have problem with removing those 4, but the radiator of the mainboard. Not always it wants to get out easily.
I am sorry, I wouldn't be able to help you much with that one, we really only service the 2015 and newer models. With that said dead no power is usually either mainboard or power supply board. Those are the 2 most common parts that cause a no power fault.
It is, but finding a longer version of the same cable I don't know how you would do that. Might be easier to just use an extension cable or small power strip that would give you a few extra feet of cable.
Hi, I just replaced the main board in my Sony 65X 750 F everything works after firmware update. You can hear the dings when you go through the apps but no sound on any of the apps or TV at all. I’m not sure if the firmware didn’t go right or I’m missing a step, any help would be appreciated
Easy fix, you have your audio set to external speakers and it needs to be changed to internal speakers or you plug in external speakers. When set to external speakers the TV speakers for some reason still output the dings and sounds from you navigating the menus, I don't know why but that's what it is.
Hello, I have a similar problem on a XBR 75x855F (latin america version), and have already received a new emmc from a Chinese store, but I have the following doubt: Is it necessary to write the android system (or the boot) to the emmc before soldering it? Or is it enough to have a pendrive with the file sony_dtv*.pkg (from sony) so that the TV installs the system on the empty emmc? Thanks
Jorge, You need to program the EMMC chip using a specialized programmer. If you do not and install a blank EMMC chip, the board won't boot at all and you won't be able to load up the software from the flash drive since the USB port won't be getting any power. I won't be able to help you unfortunately since I don't have the software for your board. Typically what I do is I buy a fully functional board, factory reset it to default, remove the EMMC, grab the software off of it, put the EMMC back onto the board, make sure everything is still working 100%, and sell it on eBay. But now I have good software to fix other boards.
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Thank you very much Nick. I understand the difficulty. Do you think that the software of the 75x850F will be able to work on the 75x855F? (since they are from the same year, same segment, and just a region variation). Maybe, with the boot1 and boot2 parts of the software my board could boot, then power up the USB port, so that the sony firmware can update the system? In that case, could I buy your software via ebay? Thanks again and greetings from Chile
@ We have tried that in the past but have not been able to get it to work. This is partially why we don't offer services for Latin American customers as we aren't equipped with the correct software.
Hi i am from india, i repaired my 24 inch led tv by replacing fr8012 regulator and usually diya inti lot of other things besides being a doctor by profession, my old 40 inch led tv clicks while switching on but turns to green then goes into two blink error, can u help isolate me the cause for that. Tried to isolate the problem but this 40 inch bravia ex710 is giving me pain since i wish to restore it badly as it was made like tank and i love it. Can you help? Atleast whether the motherboard Or the power supply issue? I have checked many components using multimeter but couldn't isolate the problem on the suppley, except have doubts about the FETs. Have tried unplugging the backlight to isolate if at all it had backlight short since the board is not giving any voltage except the standby 3.3 volta
2 blinks is power supply fault. I can't help you diagnose and trouble shoot further since I am not in front of the circuit board but I highly recommend you watch this Sony power supply video next as I believe you have the same fault that we cover in the below video ua-cam.com/video/PYXJiyJ5kUk/v-deo.html
@@NicksTVRepair Thanks for your help but i tested the mosfets and they were not shorted, double checked by removing it. Powered also without them and the set remained in same state. Besides used the power on and standby jumping to trick the board but it didn't produce any volts except the standby voltage. SMPS just clicked when jump wired the stand by and power on pins. I am suspecting SMPS fault or worse case the motherboard.
Hey there! I have a 75 900f that is completly dead. I bought a mainboard to replace still nothing. Then tried a power supply still nothing. If i disconnect the mainboard and do the jumper pins i get a red light flashing 3 times on the led board but nothing else happens. No click from the power supply or anythjng. Could the static converter be the issue? Any help would be appreciated.
To me, it would mean your mainboard is defective. eBay is full of non-working boards so it's possible you received a dud or you didn't pair the board to your TV. If you would like to send in your mainboard for us to live test and fix we can do so, this way we can confirm the diagnostic and then perform the repairs. This way you know for sure whether or not the mainboard was the fault, and since we live test the board both before and after repairs we know again for sure the board you will get back is fully functional. We also provide you with the flash drive and instructions for pairing.
@NicksTVRepair so if the replacement mainboard is good it sill at least turn on and give up the pairing lights correct? I am thinking the board I got off ebay is bad like you said. I will take a look at your website about maybe sending mine in. Thanks!
So my standby doesn’t have the 3 volt on the power board, there’s 28 bolts going out from the power board. I have a XR-65X90J. My TV won’t power up at all and my standby light won’t turn on. Opt light won’t turn one at all.
I would recommend disconnecting everything from the power supply and trying again. It is possible there is a short on one of the other boards bringing dow the 3.3v to 0v. So disconnect everything and try measuring the standby line once more. If you still don't get anything then your power supply is defective and needs to either be replaced or repaired. If you do get the 3.3v from the standby to come back then reconnect each board 1 at a time until the standby voltage goes away again and when it does you can identify the defective part to repair or replace.
If there is 0v on the standby line then it would indicate your power supply is dead. However, it could also mean your multimeter was not properly grounded or making proper contact with the line you are trying to measure. If you have this exact TV set, it is very rare to see the power supply fail, I would highly recommend double-checking your reading.
Thanks! I was reasonably sure that my multimeter was making contact, so I ordered a replacement power supply and the TV works fine again!. I have seen others also note that it is rare for the power supply to go out, but I guess I got that one rare case where my PS really did die. Thanks again!@@NicksTVRepair
Not sure I understand the question but if you follow the same steps I take in the video it will tell you which circuit board is at fault. Just like the video however 99% of faults are due to a defective mainboard. If you are unable to follow along you can always send us both your power supply and mainboard and we can troubleshoot and test them for you. If you check the video description you will find our contact info, I recommend messaging us first or filling out our contact form and providing with a full set of symptoms you are experiencing along with the full model number. We can guide you from there for our mail-in service.
Picked up a free sony xbr-75x900f from a neighbor. Tv has white stand by light at the bottom and I can hear sound but no picture, not even shining with a flashlight. I opened it up, LED Driver board shows a green light and next to it is a red light that lights up 3 times consecutive then pauses then lights up 3x again and so on. Any clue to what those led’s mean. Im waiting for my volt meter to get here and thought I would ask before I went in deeper lol.
"Tv has white stand by light at the bottom and I can hear sound but no picture, not even shining with a flashlight" This means your power supply is good. Most likely you have a mainboard failure. The mainboard does commonly fail for this model TV, we have had to fix that module more often than anything else. Especially with those symptoms.
Did you figure out your issue? I have the same tv. I replaced the main board with one off ebay and nothing. Then tried the power supply. Nothing. If I do the jumper pins with main board disconnected I get the 3 red lights on the led board but that's it. No click from the power supply
Hi, I own a Sony X80K 55-inch TV. The problem is that the TV is not turning on. When I press the power button, the white light under the TV turns on with a sound(normal boot up sound), but later it turns off. When I press different buttons on the remote, only the white light blinks as if receiving communication from the remote, and the screen remains completely black without even showing the Sony logo. I've already connected it with HDMI e-ARC to a Sony soundbar. On the soundbar display, it shows the TV sign, indicating that it's receiving data from the TV, but there's still no power, only a black screen. It's just 10 months old. 😢
I am not sure I understand your sentence. If you jump the 3.3v standby line to the T-con_ON line then your T-con_ON line will read 3.3v because that is what is being injected into it. This is your command line and it should not get more voltage than that. So far this is normal. When you do this however provided your power supply is also getting the on command aka 3.3v to the Power_on line then your T-con_VCC voltage should show 12v. T-con_on is a signal /command line coming into the power supply, the T-con_VCC lines are outgoing power lines going out and to the T-con. Does that make sense?
@NicksTVRepair yes. I did the jumper like in the video with wires connecting the standby 3.3 to power on and to tcon on. But rather than getting 12 volts it's just the 3.3. Does that make sense?
@NicksTVRepair I assume because all three lines when jumped together only have the 3.3v from the standby line, rather than the proper 12v, that the power board is defective. I know many times people assume that if the standby voltage is good they assume the main board is bad and it's not sending the signal back to power on
I installed a new main board on my sony xbr-75x850c and then installed the firmware off a usb stick. After awhile my tv reset and the light on the bottom is now solid white and i can hear things when im pressing remote buttons bit i cant see anything. My tv is on an endless loop of different colored screens for aome reason? Rotating between like red - green - blue, striped, etc etc. But the light on the bottom is solid white and i can things when i press remote buttons. What did i do wrong?? :(
Hello, Please watch this video I made showing exactly how to pair your mainboard and how to resolve many issues that arise. Your exact problem is covered in the video: ua-cam.com/video/3kYPjIHt8Lc/v-deo.htmlsi=cw5pNNvPYYnMcM0y
@NicksTVRepair I've triple checked all my ribbon cables and they all seem to be fine and connected properly. I'm still getting the colored screens cycling no matter what I do. So now what??
The issue is still the same, your mainboard is not sending the signals correctly to the T-con. If you have already reseated your ribbons several times and still have issues, then either your ribbons are damaged, the connector has something stuck in it such as dirt, hair, dust, or something else preventing the ribbon from making good contact inside the connector. Where did you get the replacement board from?
If you are reffering to the software you need to download to a flashdrive once the eMMC chip has been replaced so that you can pair your mainboard back to the TV, that will be on the Sony support site. Type in your model number in their search and you should be able to find it. If you are asking for the eMMC image, then that is not provided.
It looks to communicate with your T-con and maiboard. If it's not paired to them then it will require to be paired. If it is already paired then no it won't require for you to pair
With Sony TV sets made between 2015-2018 you have to pair your mainboard and T-con together for them to work. If I have a 100% working TV but decide to remove my mainboard from my Sony TV and put in a new mainboard in, it won't work. It needs to be paired to the TV. Once I have it paired, the TV then will turn on and work. If I now decide to put my original mainboard back in for some reason, it won't work because now the TV is paired with the replacement mainboard I installed and no longer paired with the original. So now I have to pair the original mainboard back with my TV. It's not 100% like that but that's kind of the basic idea.
I have an old Sony Bravia tv i need help it just starts blinking around 18:00hrs 6pm and it switch's off we have to wait for an hour plus for it to switch on
I can't help you without knowing both the model number of the TV as well as the exact symptoms. What blinking are you reffering to? Are you refering to a blink code on the standby light? If that's the case please let me know exactly how many blinks! Also make sure to provide the info in a new comment. I don't get notifications on replies.
@@NicksTVRepair Greetings, thank you for your response. It's a Sony model KDL 32P300H LCD Digital colour Cyfrowy Telwwizer 220_240V 50Hz 130 W . And I meant it starts blinking and volume if affected and goes off.
Mine will turn on for a few minutes and show vertical stripes on the right side of screen then shuts down. Will only turn on (only clicks) again until you wait an hour. Let me know, Incan send in mainboard?
While I do believe this is a mainboard fault we can service for you, I would like to have you email me a picture of the vertical stripes you are seeing. Please check our video description, we have a contact form link as well as our email address. Please send us an email with the picture of the issue and we will get back to your from there. Thank you
Thanks for your help. Will do. The tv only barely turned on once and produced the bad image. It really is more of a “clicks but doesn’t turn on” problem. Will be contacting you in a week. Looking forward to it.
You would need to program the chip as well. You can't take an eMMC from one TV and use it in another without programing it with the specific software required for that specific TV. As for the eMMC itself it would need to be the same exact eMMC.
I have a Sony Same model but 85” , when I turn it on, screen quickly flash and turn off right away and won’t turn back on , also the red light blink 4 times . Please help thank you
I am told sometimes the links don't show up in the top right. Here they are Back Cover Removal: ua-cam.com/video/u_Y96WIcLoM/v-deo.html Amber Green flashing light video: ua-cam.com/video/gBd2g7kRsEM/v-deo.html Also if you want to send in your mainboard for repair, here is our repair service listing: nickselectronics.com/products/xbr-75x850f
It is possible the replacement was defective. 99% of the time a no power fault is mainboard related. If you have a multimeter and the ability to do a few voltage checks to make sure your power supply is sending the standby voltage, as long as that's happening, then your power supply is okay and the fault is with the mainboard. If you don't have a multimeter or don't want to do the troubleshooting, you could always send us the mainboard and power supply for us to troubleshoot and diagnose for you. If you have any questions regarding having us test and fix your modules, send us an email directly or fill out one of the contact forms on our website. All of the contact info is in the video description.
@@NicksTVRepair What about when your power supply has no voltage for standby or anything? Is it still your main board? I have a XBR-55X800G and has no power but i also get no voltage on the power board pins? Could it be the Power board or is it the chip on the main board?
I have a dead kd43x8500c Firstly it will loop restart Second red light And last no led light aur black screen I think my emmc chip damage so I my try to find new emmc chip so tell me where I can find emmc chip btw my emmc chip no is KLMAG2GEND-B031 If you have any idea what can I do or any suitable emmc chip name please comment which available in India
Hello, I think you are correct your EMMC is most likely at fault. Since you have a none North American device, and i believe it is European, I would suggest you try speaking with a European company such as www.mjkelectronics.com/en/ They should be better able to help you
I have same problem but I don’t have the tech skill, tools and gut to fix it. Please come and fix it. U can keep the tv bc I don’t have the money to pay u either
If you want to send in just the circuit board, it's very affordable to fix your TV if you send in your affected circuit boards and have us do a component level repair.
Depends on the size and weight of the circuit board and package as well as the courier and speed. We have had people send us circuit boards for repair from Europe, Africa, the middle east, and Hongkong before. Not all international boards are repairable by us however if they are software failures. For example, Sony boards such as this one with software failures, we can only service the North American version of the model as there are differences in the software and how they operate.
There is a very high chance you have a mainboard failure then. If you want to send yours in for repair, we have links to our website in the description with more information.
Please reach out to us directly, our contact information is in the video description. Make sure you provide the full model number of the TV, the symptoms you are experiencing, and any troubleshooting information you have available. The more information you provide us with, the better able to assit you we will be.
Yes that is a common fault, but this is good news though because other models like Samsung's often have panel failures which are not serviceable. At least with Mainboards failing you can either replace them, or fix them on a component level and not have to throw out the TV.
I can understand that is a bit frustrating. The good news is that although it has failed, with most Sony sets the TV is at least serviceable, the failed parts are usually the circuit boards inside the TV where as other brands we see failures with the screen itself which means the TV can't be fixed no matter what.
You can but it's much more economical to fix than to replace. We make it easy as well by offering 1 year warranty on our mail-in service. We do most of the heavy lifting for you. All you need to do is send us your defective board, we will take care of the repairs, test it, make sure everything is 100% before returning it to you.
I would have to disagree. We have fixed over 20,000 TVs in the last 8 years, I would say when you take into consideration the manufacturers market shares VS how often we see them come into our shop for repair, the cheap TVs from walmart are the #1 to come in. We get lots of TCL, and roku TVs as well as the lower end vizio, and lower end LG. Not many of the high end Vizio or high end LG's however. We do get Sonys as well but not nearly as much as many of the other brands. We do a lot of videos on repairing Sony because we think they are one of the major brands worth fixing due to the value and quality they have. The thumbnail is just there to be dramatic and get the click, but they have really good picture and are worth fixing in my opinion.
@@NicksTVRepair I would have to agree. Do a Google search and you will see what I’m talking about. Called Sony and they even said it’s been a problem over the last few years. I have 2 Sonys, 1 65 inch which is 2 years old that tools a shit and Sony said to pound sand. I also have a 2nd 65 inch booth last year around Christmas that the picture is split down the middle and discolored on both sides. Thankfully that one is hopefully going to get replaced. The first 65 inch was 2 years old. 1299 dollars and Sony would NOT stand behind their product. I’m done purchasing Sony especially after googling how common these problems are.
Happen to us too, Sony has a serious problem with that. Obviously its not worth repairing after 5 years, but come on sony, we dont have 2000 $ for a tv every 5 years !
I would disagree and say that it is worth fixing. We have fixed thousands of Sony TVs with these issues. You would be saving $1,800 by fixing your TV instead of buying a new one. Check the link in the video description we have a flat rate service for your mainboard that is less than $200 and will come with a 1 Year warranty.
Send in your mainboard for repair!
nickselectronics.com/products/xbr-75x850f
info@nickselectronicrepair.com
520-838-9359
Contact form on our website:
nickselectronics.com/pages/contact
32wd757
do you replace main board for Sony XBR 55X700D? Couldn't see this model on your website.
No please
Cuanto me vendes la copia de emmc porfavor 🙏🏻
Man this guy totally saved our TV from having to be replaced, changed the main board on A Sony Bravia totally worked thanks man your videos are big money savers
Glad I could help
These guys have been very helpful with helping me fix this exact problem. They helped me decide which board to send for the fix, and then kept me informed of the testing and work being done. I just received the board back and the installation and pairing was exactly as they described. So much cheaper than a new TV. I would highly recommend these guys.
Thank you for leaving such a positive comment!
I am glad you had a pleseant experience with us!
Thanks for this video. I was able to follow it along for my XBR-55X900F, and every step led to the same result... the main board. Sending it your way! The only part that slowed me down was disconnecting the wires to the board. There was one style I haven't seen before, the two going to the TCON, but I was able to figure it out. The two little black buttons on the edges need to be pushed down, for anyone that might get stuck on that. Thanks again!
Hello Nick,
Yet another excellent video 👍
Sony has know about these terrible eMMC chips for years and have still not come with with a better more long lasting solution. On cheaper lower end branded mainboards (for example Vestal), if there is an issue you can just say oh well it was a cheap tv so lets just buy another one. But these Sony Android TVs are not cheap, nowhere near cheap so all these eMMC issues are just ridiculous and gives Sony a bad name when it comes to TVs with eMMC issues.
I repair TVs as a hobby (as well as upgrading already good audio equipment internals to audiophile sound quality), I'm actually a self employed software/app developer and my house is full of Sony Android TVs. One of my TVs I had to replace the eMMC and that was not fun for me to do. We actually only ever use 4K Chromecasts plugged into all the TVs in our house as using the apps on our mobile phones and then clicking the cast icon is much faster than using the tv remote with the built-in native tv apps.
Anyway keep up the great work and videos 👏👏👏
Thanks for the comment peter, I am glad you like the content.
I personally like using the firestick on all my smart TVs it's much faster than the built in system for sure, regardles of it being a Sony, Samsung, LG or other brand.
Hello Nick!
Months ago I talked to you by email, I asked about sending an eMMC chip for the Brazilian model XBR-70x835F. I bought a new board from Sony and the TV is working. Thank you for your help!
The defect of the old board is definitely the eMMC chip.
Nice that's good news! Glad you got it back up and running. Yeah sorry we get requests for chips for the Asian, Europ, and south american versions of the models all the time. The problem is that the mainbards for those are designed differently depending on which area of the world the TV is going to due to different regulations and systems for those countries. So the software is different and we don't have those.
But I am glad to hear you got the set fixed and working again! Sony TVs have some of the best picture and are definitely worth fixing.
Where do you buy the jumper cable wires at 1:56? Or are they makeshift ones? The ones used for “tricking” the t-con.
Amazon
This is the listing I purchased in the past: amzn.to/4dJShiR
Hey Nick,
I followed your guide, after wiring standby 3,3V to the regular 12V I only received 3,3 v and not the regular 12 v (compared to what you got, in your example)
Does this mean the issue might be related to the power supply ?:-)
Great vid!
I do not wire the 3.3v to the 12v line.
I put the 3.3 to the PS_ON command line. That is what activates the power supply and allows it to produce 12v
Thank you for sharing all these videos on troubleshooting! My XBR-55X850A (non-android tv) recently shut off by itself, I was able to turn it back on for like 30 minutes, it then shut off again by itself, ever since, it wouldn't turn back on, now I have no power, no standby light, nothing. Following some of your videos on how to check voltages, I got the standby reading 3.3V, all REG12V pins read 0V without the mainboard plugged in, but with the mainboard plugged in, the REG12V hovering just above 9V. Do I have a bad power supply or the main board? Thanks!!
I don't often work with that model so I am not as familiar with it but based on what you are telling me it sounds like you have a mainboard failure.
@@NicksTVRepair Really appreciate your reply! You are a great man! I wasn't giving too much hope for you to respond to an older video, so I actually took the chance, got a power supply board, and it did the trick. I know the tv set is old and probably worth nothing now, but I really hate to throw away a giant piece of tech in the landfill, only because of one small part or the faulty PS board in my case, and I bet you could probably fix the PS board by replacing a transistor or whatever the part may be. So, for what you're doing is actually saving the environment, keep up the good work! God Bless! Wish you do good with the business! Thanks again for all your video uploads!!
Hi Nick, great videos!. I have a Sony Bravia XBR-55X700D which doesn’t turn on. I checked the power board for the 12V and the 3.3V standby and they were ok. At this point, I am not sure if the power board is 100% fine. I have not tested the main board because I don't know how to do it. What is your advice?
Hello,
Based on the information provided it sounds like your power supply is fine, you are getting both the 3.3v and the 12v.
If the power supply was damaged I would expect one or both of those to be missing. It is incredibly rare for the power supply to fail, 99% of the time the failure is with the mainboard.
If you really aren't sure and would like to have both tested, you can send us both of your boards. We have a testing/diagnostic service available and we can test the boards for you. We also do offer a flat-rate repair service for your mainboard.
The mainboard repair service is below:
nickselectronics.com/products/xbr-55x700d
The bench testing service is linked below:
nickselectronics.com/products/diagnostic-and-testing-fee
I have and XBR-65900. It went completely dead as described here. Wouldn't turn on no matter what. Had he main board replaced and it worked 100% perfect; however, I noticed the very most subtile differences in the main TV GUI, and while some smart apps worked (UA-cam, Disney+), some did not. Netflix gave a UI-800 error and HULU gave a PDEV-320 error. These potentially indicate a hardware error. Trying to find out if my board is somehow not compatible with something related to the network on the TV, or if the main board is just bad. So frustrating.
This is not a hardware error, it is an error due to licensing. There is no way to fix this. You will have to use those apps using external devices such as a cable box, Firestick, Roku stick, Apple TV, chromcast, or other similar streaming device.
@@NicksTVRepair I would suggest people always use something like a Firestick rather than another product for streaming because manufacturers don't seem to bother supporting these things. Android TV might be an exception though but some random smart TV or set top box probably not
I have Sony TV XBR49X800E doesn't turn on at all for unknown reasons. I replaced a power board, nothing turns on. Black screen, no light signs on main board. My question is what thing is responsible for not turning on. How to diagnose main board, T-Con board, a thing for standby. No light in standby when plugged in electricity.
If you follow the instructions in the video, it will show you how to determine which board is at fault.
The T-con is in charge of providing data to the screen, which has nothing to do with the TV turning on. If you were to remove the T-con from the TV you would still be able to turn the TV on and off, but you wouldn't get a picture.
The power supply and mainboard are the only 2 parts that can cause a no-power fault. 99% of the time the mainboard is the one that causes a no-power fault. To confirm this follow the steps shown in the video.
@@NicksTVRepair I tested the main board Sony TV XBR49X800E, I found that two of pins where to connect to the power board no resistance, what should I do to know where the problem is?
I am sorry but I don't understand what you are saying in your last message.
My original statement still stands however, your mainboard is most likely your fault.
Hi, can be used some other emmc by brand or with smaller (16) or higher capacity?
You can use a different brand eMMC but it can't be a smaller capacity. I think you can go higher, I don't actually know, my tech would but he is out for the day already. I think typically we try to stick with the same capacity.
Hi Nick,
Just found your video. I'm trying to fix my Sony tv with no power issue. I have 2.6v on a STBY3.3v. Also I haven't got 12v on pin 25. What would you say it's the problem?
If you disconnect everything from the power supply and power it on do you still have 2.6v on the 3.3v standby line?
If yes then you may indeed have a defective power supply but that is very odd and more likely that your multimeter is out of spec than the power supply. If you had an issue on your standby line I would expect 0v or oscillating voltages, but not a low voltage output. A no power issue on a sony TV is 99% of the time due to a mainboard fault not power supply.
Hi, great stuff. I have the same model (800h instead of 850F), and i get no screen, but power, sound, and backlight is working. Any suggestion on how best to approach fixing? If i had to take a wild guess, the mobo needs to be replaced? Could it be anything else?
I have to admit, I haven't worked with the 800H much so I don't have an answer for you on that right now. But if you are getting backlight and sound we can rule out the power supply and LED strips. You could have a fault with either the Mainboard, T-con board, or the panel.
The T-con and mainboard are the only parts that you can replace so I would suggest replacing both and seeing what happens.
I have a 10 month old xr85x90k that randomly blows my ckt breaker in my box. The power board was replaced and still does it with nothing else on the ckt. What do you think?
If it's 10 months old it's under warranty and I would recommend having it fixed under the warranty channels.
But also try plugging it in in a different circuit in a different part of the house and see if the issue persists. If the TV works for the most part then the issue is most likely not with the TV but with the plug, the breaker box or wiring between the plug and breaker box. If the power supply was drawing enough power to trip the breaker then something would have caught fire or shorted out in the TV and it would be very obvious.
Thank you for your video. I'm only getting 11.23v for tcon. Is that normal? I was also wondering if I could do a similar test to see if the back light comes on. Thank you!
11.23v is good yes as for triggering the LED backlight that is a bit more advanced.
@@NicksTVRepair thank you!
We have a KD-65X75CH that is not responding to remote control functions. We have reset the TV, bought two different remotes and new batteries for the remotes. Nothing… Now the TV is stuck in the Welcome screen with the selection of languages to choose from for the setup. Any thoughts on what it could be?
You only mentioned the remote control, what about using the button?
If that also doesn't work It would be worth trying to replace the IR sensor board.
Any tips for repair the power supply for this model? No power on conector Just 300v on the filter capacitor and 14v on the pwm ic
It is very rare to see these power supply boards go out. I have only seen one go out before which is why I did the quick little check to confirm it was good. It will be very hard for me to get content out for that repair since it is so rare to see these go out, but next time I encounter one ill make sure to do a video on it.
I don't think we even fixed the one we had encountered that was defective at the time since replacement power supply boards were very cheap at the time, it made more sense to just replace it.
great video, I have a dead 55x800h, I checked the 3.3v and 12v were ok
but no TCON 12v, I jumped the power on and icon on with 3.3v and tcon 12v was there. so power supply was ok
I guess my issue is the main board. my question is after replacing with a new board, does tv need to be software upgrade or restore it for the new board?
is the board compatible with different size? like a 55x800h will work with a 65x800h? will still need a software restore after installed?
or if I send you the mainboard do I need to restore the tv software or after the repair is just plug and play?
thanks
actually I just fixed it by changing the mainboard. I was able to find a 65x800h board,
the tv works fine now, the only thing is that after I reset to factory, it shows 65x800h, any way to flash or upgrade to become 55x800h
I know I can just change the name but any way to do it permantely?
thanks
I have a 900F that has the same issues. No power on TCon 12v. I did notice the power supply smelled of burning electrical in the bottom left hand side the the power supply. And some noise coming from the mosfets. I’ve had the main board replaced once.
The 900F is a little bit different but the same diagnostics still apply. If you are able to get the normal voltages to the mainboard such as standby, and all the 12v lines from the power supply then it means the power supply is good and the fault is the mainboard.
If you aren't able to get the voltages, then the power supply is at fault.
Hey great work by the way. I've just purchased a Sony 65xg8505 looks identical to the one your working on. I'm getting 0V from all the outputs on the power supply no 3.3V no 12V I have 240V going in and I can find voltage all over the power supply board at various points. I've disconnected the main board and T-con incase that's causing no voltage on the 3.3V put no luck. Do you think power supply or main board ?
9 times out of 10 a dead no power fault is mainboard as shown in this video. But if you are not getting any output voltages from the power supply even with the mainboard disconnected, and you are sure you are doing the voltage checks correctly, then you have a defective power supply. Try checking for shorted diodes first, most Sony power supply boards fail with shorted diodes.
@@NicksTVRepair many thanks for the help I noticed you do some BGA reballing aslo I've reballed a few PS5s. Interesting regarding the Shorted Diodes I will check that later this evening. If I don't find any shorts I will most likely check out the IC and replace
@@NicksTVRepair You where right I found a SB260 60A 2A diode shorted. Out off all off the Diodes I own I can't find a match only rectifiers no Schottkys typical haha. Update replaced the SB260 with a similar value only difference was 5A instead of 2A it works ! Many thanks if I can donate to your channel I will 🙏
Bottom right of the video there is a "Thanks" button for donations.
I appreciate that!
Also do you know any good reputable websites to purchase pcb parts for tvs? The usual one I keep seeing is encompass. Not sure if I trust eBay. Thanks.
TV parts today is pretty bad in terms of quality parts. They send defective boards half the time. eBay is also pretty bad as well a lot of sellers with defective boards.
Encompass is a good one, so is Shopjimmy, but more importantly if I offer a repair service then send it in! I am the most trusted seller :)
@NicksTVRepair, my standby voltage is reading ~3.4Vdc, REG12V is ~ 12.3Vdc, my TCON_VCC12V stays at 0VDC. I disconnected the power to the main board and TCON, jumped my standby voltage to POWER_ON and TCON_ON (verified ~3.4Vdc on standby voltage, POWER_ON, and TCON_ON) however my TCON_VCC12V remains at 0Vdc and my REG12V remains at ~12.3Vdc. Any recommendations on where to check? Would sure be nice to have a schematic for these boards :D
If this is correct you have a bad power supply. However I have never seen this before where only the T-con 12v failed.
Are you sure your jumpers are correct, please double check.
What symptoms are you seeing on your TV set? Usually that is a better way to diagnose the set than doing voltage checks.
@@NicksTVRepair Thanks for the response! I tripled checked the jumpers and verified they were correct. Symptoms of the TV is that there was no standby light, display not powered on, no change when trying the power button hard reset or the remote reset. I've ordered a replacement power board and will let you know the results. Wouldn't be surprised if it turns out to be the main board, but the PS replacement was cheap so it's worth a shot at the cheaper repair. Thanks again!
@NicksTVRepair I received the board and swapped. Symptoms were the same, so i tried the 3.3V standby jumper via a 1kohm resistor in series with the Power On and TCon On. With the jumper in place and 3ish volts verified on standby as well as power on and tcon on, the tcon 12v power stays at 0 AND the 12v Reg rail drops out to 0. I replaced the original power board and it is doing the same thing (tcon 12v power AND 12v reg goes to 0). Would this be a problem with the TCON board or still related to Main board?
Scratch that, there is no power path to the TCON board and the power harness output is demated so that wouldn't make sense. Ringing out the power harness to check for shorts on the TCON power lines.
Resolved the issue, it was the mainboard. Not sure why I couldnt cause the power board to enable the tcon 12v using the jumper technique but no worries now that the TV is working.
Hi! I have an XBR-75X850G Sony Bravia. I have no voltage on pin 5 standbye power. Any suggestions?
No standby voltage typically means you have a power supply failure. That can be caused by any number of components such as shorted diodes, ICs, or a resistor that could have failed open. For that, I would need to do a more in-depth diagnostic.
If you did want to send in your power supply for us to fix, we do have a flat rate service which I will link below:
nickselectronics.com/products/1-474-732-12-850g
Hello, I got a xbr-75x850d for free guy said it was working and just turned off. No signs of life. Never seen a tv with 2 power supplies 🤔. I tested for 12 volts I see that, however on the standby light I get a reading of 9.4V and when I tested pin 27 going to dps board I have nothing. Would this be the PSU or main board?? Thanks
Connector CN6401 pin 27 is 12v lines to T-con, it should only show 12v when the TV is on. So if your TV is not turning on then that is normal for it to not show 12v.
What you want to check is pin 5 which is the standby voltage. It's on the lower row so you have to wiggle your multimeter lead in between the wires to get a reading on it, but if you do get your standby voltage then you can almost certainly rule it out as the fault. Make sure you look at the legend to identify where pin 5 is on the connector. It's the third pin from the top on the lower row. If what I am saying doesn't make sense, just look at the legend and it will visually show you where it is.
it is very rare for that power supply to go out. 99% of the time the mainboard is the one to cause a no power fault.
@@NicksTVRepairthank you so much for replying! Everything you said does make sense, when I tested standby voltage I’m getting 9.4 which is weird right? In regards to what you said about PSU that it’s rare for those to go out, I believe I can safely say it’s main board. I will purchase one and report back for anyone having the same issue. Although this main board on this model tv is a little expensive! 😂 but hey it was a free tv! Thank you once again! You gained a new subscriber!
Did the new mainboard work?
@@NicksTVRepairyes it did work! I purchased the main board from china, so the android os is a little different, but I just connected a firestick because there was no netflix and its working flawlessly! It was a free tv so can’t beat that. Thanks for all your help! I might try and repair the original board. You wouldn’t happen to have the os to write onto new EMMC chip?
sony kd75x85j just went out this afternoon when i got home.tried to turn it on and nothing no led standby light just a black screen.any ideas on what it can be?hopefully its just the power supply board.any answers will help thanks.
Mine went out too because of a storm call your insurance company
It sounds like a mainboard failure just like we see in the TV shown in this video.
It is rarely due to the power supply.
How do I obtain one of those chips that your replaced? Also do I need a soldering gun to instal it?
This is a very advance repair that requires advanced tools and skills. I do not recommend you try and replace it yourself unless you are a trained technicians who already has the tools and knowledge to do this repair.
This is why we offer a flat rate mail-in service with a 1 year warranty. In fact a lot of our customers are TV technicians, because they know this is a very advanced repair, they don't want to risk damaging the circuit board beyond repair. Most electronics repair shops are set up for a lot of soldering work, but they are not set up for this type of soldering as it is more advanced and requires a lot of training and know how.
Here’s an interesting question. Just got a 75x940e super cheap, but the screen almost misplaces pixels. At first it was in the form of a line and now it’s pixels scattered about. Very random and not all the time. And also in the settings menu it thinks it’s a 55 930e. Any idea what might be going on?
Hello Luke,
I believe we already spoke via email.
This is most likely a mainboard fault, however we don't service those due to very low demand. Per my email we can fix it or at least provide you with a replacement but would require some assistance and parts from your set to do so.
@@NicksTVRepair yep it was a main board something with the emmc. Not sure why it thought it was a different model unless someone tried replacing it with the wrong part so I swapped the board and good as new
Hii nick is it usual that the emmc is bad..
Almost exclusively :)
My xbr 55x850g was dead one day 3yrs and only 100 hrs, always a true sine UPS for power. No voltage on the power connector. Removed board, I checked the caps, fuses (look like diodes no markings), and all diodes,all good but one diode 2amp/60v. Its lower right on the board. Replaced and badda ping batta boom! up and running.
Wow awesome! I have seen many 850G TVs come in to our shop for repair and so far I have not yet seen one with a power supply fault, I guess it does happen then. Nice work on figuring it out!
what main baord tester do you use ? Can u do a video on it?
Hey Raj,
Yes we were thinking of doing a video where we review some of the most usefull tools we have and use, which would include the mainboard tester. That video is probably a couple more months out however.
This mainboard tester shown in the video is for standard and HD 1080P TV sets. The model number of the device is TV160. You can pick it up for about $145 on eBay or $125 from Aliexpress.
There are others that work with both 4k and 1080P Tv sets which I would recommend getting over this one, however this one is much more affordable than the others. The 4k ones are closer to the $300-$400 mark. We might try to do a bulk purchase from a chinese vendor and retail them at a more affordable price on our website at some point in the near future, but we aren't at that point yet. When we do, I will most likely make an annoucement on the channel about it.
@@NicksTVRepair great! Caribbean tech here.....I have been struggling to tell the diff of tcon...and main board issues...so this tester should help
How you take out those radiators. I have a problem with taken them off. Thank you for the video just by the way.
That information is in the video. Please rewatch starting at 3:22
ua-cam.com/video/Y00I6rx70j0/v-deo.html
@@NicksTVRepair thx :)
@@NicksTVRepair but some are stack as they'd be glued together. I don't have problem with removing those 4, but the radiator of the mainboard. Not always it wants to get out easily.
Hi nick my Sony TV model number KD-65x9004A is dead, could you please tell me how to fix. I am from Melbourne Australia
I am sorry, I wouldn't be able to help you much with that one, we really only service the 2015 and newer models. With that said dead no power is usually either mainboard or power supply board. Those are the 2 most common parts that cause a no power fault.
Is it possible to change the plug of the power cable? I want to extend it.
It is, but finding a longer version of the same cable I don't know how you would do that.
Might be easier to just use an extension cable or small power strip that would give you a few extra feet of cable.
85 inch.. if I replace the board do I have to re program? .. or it would come on .. getting a used working one
You may have to pair it. You won't know until you try it.
Hi, I just replaced the main board in my Sony 65X 750 F everything works after firmware update. You can hear the dings when you go through the apps but no sound on any of the apps or TV at all. I’m not sure if the firmware didn’t go right or I’m missing a step, any help would be appreciated
Easy fix, you have your audio set to external speakers and it needs to be changed to internal speakers or you plug in external speakers. When set to external speakers the TV speakers for some reason still output the dings and sounds from you navigating the menus, I don't know why but that's what it is.
Yes fixed thank you for your help
Hello, I have a similar problem on a XBR 75x855F (latin america version), and have already received a new emmc from a Chinese store, but I have the following doubt:
Is it necessary to write the android system (or the boot) to the emmc before soldering it? Or is it enough to have a pendrive with the file sony_dtv*.pkg (from sony) so that the TV installs the system on the empty emmc?
Thanks
Jorge,
You need to program the EMMC chip using a specialized programmer. If you do not and install a blank EMMC chip, the board won't boot at all and you won't be able to load up the software from the flash drive since the USB port won't be getting any power.
I won't be able to help you unfortunately since I don't have the software for your board. Typically what I do is I buy a fully functional board, factory reset it to default, remove the EMMC, grab the software off of it, put the EMMC back onto the board, make sure everything is still working 100%, and sell it on eBay. But now I have good software to fix other boards.
Thank you very much Nick.
I understand the difficulty. Do you think that the software of the 75x850F will be able to work on the 75x855F? (since they are from the same year, same segment, and just a region variation). Maybe, with the boot1 and boot2 parts of the software my board could boot, then power up the USB port, so that the sony firmware can update the system?
In that case, could I buy your software via ebay?
Thanks again and greetings from Chile
@ We have tried that in the past but have not been able to get it to work. This is partially why we don't offer services for Latin American customers as we aren't equipped with the correct software.
Hi i am from india, i repaired my 24 inch led tv by replacing fr8012 regulator and usually diya inti lot of other things besides being a doctor by profession, my old 40 inch led tv clicks while switching on but turns to green then goes into two blink error, can u help isolate me the cause for that. Tried to isolate the problem but this 40 inch bravia ex710 is giving me pain since i wish to restore it badly as it was made like tank and i love it. Can you help? Atleast whether the motherboard Or the power supply issue? I have checked many components using multimeter but couldn't isolate the problem on the suppley, except have doubts about the FETs. Have tried unplugging the backlight to isolate if at all it had backlight short since the board is not giving any voltage except the standby 3.3 volta
2 blinks is power supply fault. I can't help you diagnose and trouble shoot further since I am not in front of the circuit board but I highly recommend you watch this Sony power supply video next as I believe you have the same fault that we cover in the below video
ua-cam.com/video/PYXJiyJ5kUk/v-deo.html
@@NicksTVRepair Thanks for your help but i tested the mosfets and they were not shorted, double checked by removing it. Powered also without them and the set remained in same state. Besides used the power on and standby jumping to trick the board but it didn't produce any volts except the standby voltage. SMPS just clicked when jump wired the stand by and power on pins. I am suspecting SMPS fault or worse case the motherboard.
Hey there! I have a 75 900f that is completly dead. I bought a mainboard to replace still nothing. Then tried a power supply still nothing. If i disconnect the mainboard and do the jumper pins i get a red light flashing 3 times on the led board but nothing else happens. No click from the power supply or anythjng. Could the static converter be the issue? Any help would be appreciated.
To me, it would mean your mainboard is defective. eBay is full of non-working boards so it's possible you received a dud or you didn't pair the board to your TV.
If you would like to send in your mainboard for us to live test and fix we can do so, this way we can confirm the diagnostic and then perform the repairs. This way you know for sure whether or not the mainboard was the fault, and since we live test the board both before and after repairs we know again for sure the board you will get back is fully functional. We also provide you with the flash drive and instructions for pairing.
@NicksTVRepair so if the replacement mainboard is good it sill at least turn on and give up the pairing lights correct? I am thinking the board I got off ebay is bad like you said. I will take a look at your website about maybe sending mine in. Thanks!
@NicksTVRepair I ordered a second mainboard off ebay and it fixed the issue.
So my standby doesn’t have the 3 volt on the power board, there’s 28 bolts going out from the power board. I have a XR-65X90J. My TV won’t power up at all and my standby light won’t turn on. Opt light won’t turn one at all.
I would recommend disconnecting everything from the power supply and trying again. It is possible there is a short on one of the other boards bringing dow the 3.3v to 0v. So disconnect everything and try measuring the standby line once more. If you still don't get anything then your power supply is defective and needs to either be replaced or repaired.
If you do get the 3.3v from the standby to come back then reconnect each board 1 at a time until the standby voltage goes away again and when it does you can identify the defective part to repair or replace.
@@NicksTVRepair i replaced the power supply board and it still didn’t do anything. Maybe it could be a faulty Main board?
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Thanks, you help me a lot
Glad to hear that!
Nothing at any of the pins on the power supply. Is that confirmatory that the PS is bad?
If there is 0v on the standby line then it would indicate your power supply is dead. However, it could also mean your multimeter was not properly grounded or making proper contact with the line you are trying to measure.
If you have this exact TV set, it is very rare to see the power supply fail, I would highly recommend double-checking your reading.
Thanks! I was reasonably sure that my multimeter was making contact, so I ordered a replacement power supply and the TV works fine again!. I have seen others also note that it is rare for the power supply to go out, but I guess I got that one rare case where my PS really did die. Thanks again!@@NicksTVRepair
Hi
Got my tv 75x850f that has mo picture comes on
The power is on
Any issue?
Not sure I understand the question but if you follow the same steps I take in the video it will tell you which circuit board is at fault.
Just like the video however 99% of faults are due to a defective mainboard.
If you are unable to follow along you can always send us both your power supply and mainboard and we can troubleshoot and test them for you. If you check the video description you will find our contact info, I recommend messaging us first or filling out our contact form and providing with a full set of symptoms you are experiencing along with the full model number. We can guide you from there for our mail-in service.
Picked up a free sony xbr-75x900f from a neighbor. Tv has white stand by light at the bottom and I can hear sound but no picture, not even shining with a flashlight. I opened it up, LED Driver board shows a green light and next to it is a red light that lights up 3 times consecutive then pauses then lights up 3x again and so on. Any clue to what those led’s mean. Im waiting for my volt meter to get here and thought I would ask before I went in deeper lol.
"Tv has white stand by light at the bottom and I can hear sound but no picture, not even shining with a flashlight"
This means your power supply is good. Most likely you have a mainboard failure. The mainboard does commonly fail for this model TV, we have had to fix that module more often than anything else. Especially with those symptoms.
Did you figure out your issue? I have the same tv. I replaced the main board with one off ebay and nothing. Then tried the power supply. Nothing. If I do the jumper pins with main board disconnected I get the 3 red lights on the led board but that's it. No click from the power supply
Hi, I own a Sony X80K 55-inch TV. The problem is that the TV is not turning on. When I press the power button, the white light under the TV turns on with a sound(normal boot up sound), but later it turns off. When I press different buttons on the remote, only the white light blinks as if receiving communication from the remote, and the screen remains completely black without even showing the Sony logo. I've already connected it with HDMI e-ARC to a Sony soundbar. On the soundbar display, it shows the TV sign, indicating that it's receiving data from the TV, but there's still no power, only a black screen. It's just 10 months old. 😢
If I jump Standby to TCon On and only get the 3.3 volts from standby instead of 12 volts, does that mean the power supply is defective?
I am not sure I understand your sentence.
If you jump the 3.3v standby line to the T-con_ON line then your T-con_ON line will read 3.3v because that is what is being injected into it. This is your command line and it should not get more voltage than that. So far this is normal. When you do this however provided your power supply is also getting the on command aka 3.3v to the Power_on line then your T-con_VCC voltage should show 12v. T-con_on is a signal /command line coming into the power supply, the T-con_VCC lines are outgoing power lines going out and to the T-con.
Does that make sense?
@NicksTVRepair yes. I did the jumper like in the video with wires connecting the standby 3.3 to power on and to tcon on. But rather than getting 12 volts it's just the 3.3. Does that make sense?
@NicksTVRepair I assume because all three lines when jumped together only have the 3.3v from the standby line, rather than the proper 12v, that the power board is defective. I know many times people assume that if the standby voltage is good they assume the main board is bad and it's not sending the signal back to power on
Did you figure your issue out? I replaced my main board and power supply still nothing. @adamruss656
@@Huntmx24 unfortunately not. I put it back in the box to work on again at a later date.
I installed a new main board on my sony xbr-75x850c and then installed the firmware off a usb stick. After awhile my tv reset and the light on the bottom is now solid white and i can hear things when im pressing remote buttons bit i cant see anything. My tv is on an endless loop of different colored screens for aome reason? Rotating between like red - green - blue, striped, etc etc. But the light on the bottom is solid white and i can things when i press remote buttons. What did i do wrong?? :(
Hello,
Please watch this video I made showing exactly how to pair your mainboard and how to resolve many issues that arise. Your exact problem is covered in the video:
ua-cam.com/video/3kYPjIHt8Lc/v-deo.htmlsi=cw5pNNvPYYnMcM0y
@NicksTVRepair I've triple checked all my ribbon cables and they all seem to be fine and connected properly. I'm still getting the colored screens cycling no matter what I do. So now what??
The issue is still the same, your mainboard is not sending the signals correctly to the T-con. If you have already reseated your ribbons several times and still have issues, then either your ribbons are damaged, the connector has something stuck in it such as dirt, hair, dust, or something else preventing the ribbon from making good contact inside the connector.
Where did you get the replacement board from?
@NicksTVRepair is there a way I can contact you to ask a question about my tv I'm desperately trying to fix
Can you help me with fixing our xbr?
Possibly. Send us a message directly (contact info is in video description) Make sure to provide model number info and symptoms.
Whare can we download the right flash files for the new emmc chip ?
If you are reffering to the software you need to download to a flashdrive once the eMMC chip has been replaced so that you can pair your mainboard back to the TV, that will be on the Sony support site. Type in your model number in their search and you should be able to find it.
If you are asking for the eMMC image, then that is not provided.
@@NicksTVRepair so the prossesor is always looking for a usb flash drive at startup ?
It looks to communicate with your T-con and maiboard. If it's not paired to them then it will require to be paired. If it is already paired then no it won't require for you to pair
@@NicksTVRepair what is pairing does or means exacly ? Is the communication controlled by the software inside the emmc ?
With Sony TV sets made between 2015-2018 you have to pair your mainboard and T-con together for them to work. If I have a 100% working TV but decide to remove my mainboard from my Sony TV and put in a new mainboard in, it won't work. It needs to be paired to the TV. Once I have it paired, the TV then will turn on and work. If I now decide to put my original mainboard back in for some reason, it won't work because now the TV is paired with the replacement mainboard I installed and no longer paired with the original. So now I have to pair the original mainboard back with my TV.
It's not 100% like that but that's kind of the basic idea.
I have an old Sony Bravia tv i need help it just starts blinking around 18:00hrs 6pm and it switch's off we have to wait for an hour plus for it to switch on
I can't help you without knowing both the model number of the TV as well as the exact symptoms. What blinking are you reffering to? Are you refering to a blink code on the standby light? If that's the case please let me know exactly how many blinks!
Also make sure to provide the info in a new comment. I don't get notifications on replies.
@@NicksTVRepair
Greetings, thank you for your response. It's a Sony model KDL 32P300H LCD Digital colour Cyfrowy Telwwizer 220_240V 50Hz 130 W . And I meant it starts blinking and volume if affected and goes off.
Hello can you help me fix may sony tv its stuck at aging mode
Sony kdl-55w650d
Unfortunately I can not. We only work on the North American models.
Mine will turn on for a few minutes and show vertical stripes on the right side of screen then shuts down. Will only turn on (only clicks) again until you wait an hour. Let me know, Incan send in mainboard?
Xbr-75x850f
While I do believe this is a mainboard fault we can service for you, I would like to have you email me a picture of the vertical stripes you are seeing.
Please check our video description, we have a contact form link as well as our email address. Please send us an email with the picture of the issue and we will get back to your from there.
Thank you
Thanks for your help. Will do. The tv only barely turned on once and produced the bad image. It really is more of a “clicks but doesn’t turn on” problem. Will be contacting you in a week. Looking forward to it.
Where do you get the emmc chip?
Finding good reliable eMMC chips is very difficult. That is not something I can share sorry.
@@NicksTVRepair I understand, does the emmc have to be from same tv or can I take off from another tv that I have?
You would need to program the chip as well. You can't take an eMMC from one TV and use it in another without programing it with the specific software required for that specific TV.
As for the eMMC itself it would need to be the same exact eMMC.
I have a Sony Same model but 85” , when I turn it on, screen quickly flash and turn off right away and won’t turn back on , also the red light blink 4 times . Please help thank you
Kalvin,
The 4 blink error code means you have an LED strip failure and will have to replaec your LED strips. This is also called your backlight.
Kd55x 7500h no indicator not on 12 v.3.3.v. 1v.1.5v.5v.1.8v all ok solution please sir
I am told sometimes the links don't show up in the top right. Here they are
Back Cover Removal:
ua-cam.com/video/u_Y96WIcLoM/v-deo.html
Amber Green flashing light video:
ua-cam.com/video/gBd2g7kRsEM/v-deo.html
Also if you want to send in your mainboard for repair, here is our repair service listing:
nickselectronics.com/products/xbr-75x850f
Excelente análisis//
Thank you
hey i have sony xbr-65x900c get no power at all replace main board but i still get no power bcan you help me out please
It is possible the replacement was defective. 99% of the time a no power fault is mainboard related.
If you have a multimeter and the ability to do a few voltage checks to make sure your power supply is sending the standby voltage, as long as that's happening, then your power supply is okay and the fault is with the mainboard.
If you don't have a multimeter or don't want to do the troubleshooting, you could always send us the mainboard and power supply for us to troubleshoot and diagnose for you. If you have any questions regarding having us test and fix your modules, send us an email directly or fill out one of the contact forms on our website. All of the contact info is in the video description.
@@NicksTVRepair What about when your power supply has no voltage for standby or anything? Is it still your main board? I have a XBR-55X800G and has no power but i also get no voltage on the power board pins? Could it be the Power board or is it the chip on the main board?
@@abelvasquez7165 If you don't get any voltage coming out of the power supply, then the power supply will need to be replaced.
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I have a dead kd43x8500c
Firstly it will loop restart
Second red light
And last no led light aur black screen I think my emmc chip damage so I my try to find new emmc chip so tell me where I can find emmc chip btw my emmc chip no is KLMAG2GEND-B031
If you have any idea what can I do or any suitable emmc chip name please comment which available in India
Hello,
I think you are correct your EMMC is most likely at fault. Since you have a none North American device, and i believe it is European, I would suggest you try speaking with a European company such as www.mjkelectronics.com/en/
They should be better able to help you
I have same problem but I don’t have the tech skill, tools and gut to fix it. Please come and fix it. U can keep the tv bc I don’t have the money to pay u either
If you want to send in just the circuit board, it's very affordable to fix your TV if you send in your affected circuit boards and have us do a component level repair.
👍👍👍
I'm in the Caribbean. Too expensive to send boards
Depends on the size and weight of the circuit board and package as well as the courier and speed. We have had people send us circuit boards for repair from Europe, Africa, the middle east, and Hongkong before. Not all international boards are repairable by us however if they are software failures. For example, Sony boards such as this one with software failures, we can only service the North American version of the model as there are differences in the software and how they operate.
NICE...
Thank you! Cheers!
i think my XBR-75X850F has the same issue, it has not been powering ojn since like 2 weeks
There is a very high chance you have a mainboard failure then.
If you want to send yours in for repair, we have links to our website in the description with more information.
@@NicksTVRepair y’all are in the us, im in india 😬, i’ve ordered a replacement motherboard for my unit, it’s already out of warranty long time ago
@@mayorplayz can you tell me where did you order it from....I have an X8200E and the motherboard seems to have gone kaput. I'm from india as well
Pero si no muestras como reparaste la memoria emmc no tiene sentido.
Sorry we only service USA models.
Hello you please help me check my Sony bravia fix it
Please reach out to us directly, our contact information is in the video description.
Make sure you provide the full model number of the TV, the symptoms you are experiencing, and any troubleshooting information you have available.
The more information you provide us with, the better able to assit you we will be.
Seem like Sony tvs main issue is no power & mother board 🥸
Yes that is a common fault, but this is good news though because other models like Samsung's often have panel failures which are not serviceable. At least with Mainboards failing you can either replace them, or fix them on a component level and not have to throw out the TV.
Mine crashed & burned after 3 years. May not buy a Sony again. Very expensive! 3 years? Am very disappointed.
I can understand that is a bit frustrating. The good news is that although it has failed, with most Sony sets the TV is at least serviceable, the failed parts are usually the circuit boards inside the TV where as other brands we see failures with the screen itself which means the TV can't be fixed no matter what.
I’m just gonna buy a new tv
You can but it's much more economical to fix than to replace. We make it easy as well by offering 1 year warranty on our mail-in service. We do most of the heavy lifting for you. All you need to do is send us your defective board, we will take care of the repairs, test it, make sure everything is 100% before returning it to you.
Sonys quality is not good. You will be lucky if a new tv lasts 2 years.
I would have to disagree. We have fixed over 20,000 TVs in the last 8 years, I would say when you take into consideration the manufacturers market shares VS how often we see them come into our shop for repair, the cheap TVs from walmart are the #1 to come in. We get lots of TCL, and roku TVs as well as the lower end vizio, and lower end LG. Not many of the high end Vizio or high end LG's however. We do get Sonys as well but not nearly as much as many of the other brands.
We do a lot of videos on repairing Sony because we think they are one of the major brands worth fixing due to the value and quality they have. The thumbnail is just there to be dramatic and get the click, but they have really good picture and are worth fixing in my opinion.
@@NicksTVRepair I would have to agree. Do a Google search and you will see what I’m talking about. Called Sony and they even said it’s been a problem over the last few years. I have 2 Sonys, 1 65 inch which is 2 years old that tools a shit and Sony said to pound sand. I also have a 2nd 65 inch booth last year around Christmas that the picture is split down the middle and discolored on both sides. Thankfully that one is hopefully going to get replaced. The first 65 inch was 2 years old. 1299 dollars and Sony would NOT stand behind their product. I’m done purchasing Sony especially after googling how common these problems are.
Happen to us too, Sony has a serious problem with that. Obviously its not worth repairing after 5 years, but come on sony, we dont have 2000 $ for a tv every 5 years !
I would disagree and say that it is worth fixing. We have fixed thousands of Sony TVs with these issues. You would be saving $1,800 by fixing your TV instead of buying a new one.
Check the link in the video description we have a flat rate service for your mainboard that is less than $200 and will come with a 1 Year warranty.
Thank you for not telling me to unplug it and plug it back in.
Haha yeah im assuming anyone watching a video on UA-cam already tried power cycling.