A code that technicians needs to have. Informing and advising the customer the best route for the situation, repair or just buy a new one. Great vid as usual
When my 15 year old 40 inch Toshiba stopped working in Feb this year, I had a realy hard time finding a replacement. The only TV's for sale have HDMI inputs and my PC only has VGA output. The temporary TV was a 19inch with composite input so I was using my VGA to comp converter that gave a horrible fuzzy picture, I could'nt read any text), which meant I could'nt look online for anything. The new 43 inch with VGA cost me £320. So I'm fixing the old one as a spare. :)
So what if none of the back lights come on? Is it then the power supply? I have a TV and the power supply is clicking when I unhooked the main board and stops doing so but none of the back lights obviously, any help
First!!! Good job Dave. With TVs so cheap now unless you can find a good used board it just doesn't make sense to repair a 6 year old set that may have failing LEDs in the future.
Hi ! Very interesting content and comments, thanks for your video. Do you know the usual voltage the backlight LEDs usually need on Samsungs (side LEDs, as well as backlight strips) ? I have a lot of spare parts (due to working with signage products) and yet this is a very difficult information to come by... As I am just a noob in electronics (yeah, you gotta start somewhere) I don't want to damage anything (nor myself) but would love to start tinkering with those powerful LEDs... Thanks in advance for your help !
I don't know what the typical voltage is going to be, but what I like to do is place my LED strips on a variable power supply and turn up the voltage slowly to see at what point they come on.
Was the t-con board shown in this video? I'm having trouble locating it on my Samsung MU8000. Could you clarify where it might be found on a Samsung TV? Thanks!
What if the LED do not come on when unplugging the mainboard power cable? What could be the problem then? I'm currently trying to troubleshoot my Samsung tv
I don't know if the back lights will always come on with every Samsung TV model when you disconnect the main board cable, but suppose the back lights could be bad.
Hello, I have a 70” Samsung led tv that has colored vertical lines all the way across the top of the screen and the rest of the screen is black. Any ideas how I can fix this or is it even worth fixing? This tv was given to me and I can’t afford to buy a new one. Thank you
My apologies but I don't know. It could be a display issue which would not be cost effective to repair, but I can't guess at a symptom like you describe.
Im troubleshooting a Samsung 85" CY-SA085HGHV1H. The back lights were flashing off and on. After a few minutes the backlights came on but had dark areas. The media was working and I could see video. Unplugged the unit overnight and next morning no back lights. I can hear the tv samsung startup sound but no back lights. The Back light terminal has 380vdc output so I assume the back lights went bad overnight? Makes no sense. Does the neg side of the LED have a current control that may shut down the LED's? Any ideas?
I know of one case where the backlights were still working, but their current draw was so far off from what they should be, they made the whole TV shut down. It's my understanding that feedback circuits can detect problems with defective back lights, they may make the whole TV shut down.
my samsung - un65nu6900. Powers on and has a full picture but has a thick Dark tinted line just off to the right of Center..what could it be? Backlight?
If the dark line has a perfect transition to a normal picture on the right and left edges it's probably a display issue, but if the right and left edges of the dark line are a slow transition to normal brightness it's most likely a back light issue. I'm sure you can youtube back light symptoms to get a better idea..
Hello, just a quick question if you can help me.. ue55ku6400: with all connected no boot - flashing backlight with led strip cable disconnected it boot with image (checked with light) do you think is led strip problem or power supply? thanks and sorry bad english
My issue is the backlights keep flashing/blinking every half a second...it just keeps flickering...i unplugged that same connection that you did from power board to main board and it does the exaxt same thing...how would i go about troubleshooting
So i have the same issue. Now if i unplug the main oard and the backlights stay on and i plug the mainboard back into the power supply and disconnect the top ribbon and the backlight comes on and sound comes on, but no picture, would that be a ribbon or main oard issue?
My 11 Year old TV went wrong, I couldn't afford to buy a new one, but I could afford to get it repaired, thank heavens there are still technicians prepared to fix old TV's, the way the cost of living is going up, buying new will be a severe problem for many and if they can afford to buy one they will buy rubbish brands which wont last long and which will end up in landfill
@@GrantsPassTVRepair Your very lucky, we used to be able to buy cheap used tv's, it seems so hard to find a good used one now, things change so quickly too, thank you for your reply and for the information you share :)
Hello, I need to replace a Samsung BN94-12747R Main Board for UN50MU6070FXZA Version AB15. I cannot find that version. Would I be able to use Version AA16 since that is the only part I am finding? Thanks in advance.
@@GrantsPassTVRepair I have a Samsung Un55d6005sf that has a standby light blinking 4 times, no sound, no picture. I replaced the power supply and it still does the same thing. I ordered a main board. I haven't recieved it yet, but I hope that fixes it. I tried the unplugging the cable to the main board and testing for the backlight, but that didn't work.
Hello sir hope you can answer my question: I have the same tv with the same problem, i sent it to a shop for repair and when i checked they didn't repaired the problem but added a tape to bypass it. My question is: is the mainboard and the t-con in this tv the same? The image quality with the tape its not the best, i wanted to replace the T-con board to fix the problem but can't find it. Thanks in advance.
Because I made this video a long time ago, I don't remember much about it, but based on what I see in this video, it appears that the T-con could be part of the main board, since I can't see a t-con board in this video.
@@GrantsPassTVRepair Yeah, I use AdBlock for that. I'm talking about ads the TV shows even if you are watching video from an old VCR. This is not an internet thing. The ADs are coming from inside the TV. No network connection needed. I think they said the TV has a cellphone in it that it uses to get new ads or some such. It was an aside conversation on ua-cam.com/users/Level1Techs I can not find the exact video now. Wait until you buy a new TV, then you see what I am talking about.
A code that technicians needs to have. Informing and advising the customer the best route for the situation, repair or just buy a new one. Great vid as usual
Hey bro thanks, i was wondering how to just turn on the backlight without the screen to make a light for a room and ur vid really helped
When my 15 year old 40 inch Toshiba stopped working in Feb this year, I had a realy hard time finding a replacement. The only TV's for sale have HDMI inputs and my PC only has VGA output. The temporary TV was a 19inch with composite input so I was using my VGA to comp converter that gave a horrible fuzzy picture, I could'nt read any text), which meant I could'nt look online for anything. The new 43 inch with VGA cost me £320. So I'm fixing the old one as a spare. :)
Great, i figured out with your help what samsung couldn't tell me ! i'll let you know if the fix worked.
So what if none of the back lights come on? Is it then the power supply? I have a TV and the power supply is clicking when I unhooked the main board and stops doing so but none of the back lights obviously, any help
I would say then to test the power supply.
First!!! Good job Dave. With TVs so cheap now unless you can find a good used board it just doesn't make sense to repair a 6 year old set that may have failing LEDs in the future.
I'm glad to hear you're of the same opinion Steve. All the best.
My samsung 2017 smart tv 65" only shows half of screen other half shows white and gray lines going up and down. Do u know wat can be the problem
Hi !
Very interesting content and comments, thanks for your video. Do you know the usual voltage the backlight LEDs usually need on Samsungs (side LEDs, as well as backlight strips) ? I have a lot of spare parts (due to working with signage products) and yet this is a very difficult information to come by... As I am just a noob in electronics (yeah, you gotta start somewhere) I don't want to damage anything (nor myself) but would love to start tinkering with those powerful LEDs...
Thanks in advance for your help !
I don't know what the typical voltage is going to be, but what I like to do is place my LED strips on a variable power supply and turn up the voltage slowly to see at what point they come on.
Was the t-con board shown in this video? I'm having trouble locating it on my Samsung MU8000. Could you clarify where it might be found on a Samsung TV? Thanks!
Great video, thanks! Do you know if the main board can be updated? Maybe mount one of the most modern ones with android Os?
Hello. Can you tell me how to test the display with a universal panel tester?Thanks.
What if the LED do not come on when unplugging the mainboard power cable? What could be the problem then? I'm currently trying to troubleshoot my Samsung tv
I don't know if the back lights will always come on with every Samsung TV model when you disconnect the main board cable, but suppose the back lights could be bad.
You need to test the voltages on the main board.
What is the average life expectancy of a new TV ??
Nice video fella.
got a ue55h6470 with no sound coming out of it
how should one diagnose that one?
i've done the service mode test and it shows "sound main amp: NG"
Have the same tv my lights do not light up when i un plug the main board
Sounds like your lights might be bad.
Hello, I have a 70” Samsung led tv that has colored vertical lines all the way across the top of the screen and the rest of the screen is black. Any ideas how I can fix this or is it even worth fixing? This tv was given to me and I can’t afford to buy a new one. Thank you
My apologies but I don't know. It could be a display issue which would not be cost effective to repair, but I can't guess at a symptom like you describe.
What if the lights flicker when u disconnect the power supply board ?
I'm not sure what that would mean.
Sorry , meant to say if you disconnect the cord that runs from the power supply board to the control board.
Im troubleshooting a Samsung 85" CY-SA085HGHV1H. The back lights were flashing off and on. After a few minutes the backlights came on but had dark areas. The media was working and I could see video. Unplugged the unit overnight and next morning no back lights. I can hear the tv samsung startup sound but no back lights. The Back light terminal has 380vdc output so I assume the back lights went bad overnight? Makes no sense. Does the neg side of the LED have a current control that may shut down the LED's? Any ideas?
I know of one case where the backlights were still working, but their current draw was so far off from what they should be, they made the whole TV shut down. It's my understanding that feedback circuits can detect problems with defective back lights, they may make the whole TV shut down.
my samsung - un65nu6900. Powers on and has a full picture but has a thick Dark tinted line just off to the right of Center..what could it be? Backlight?
If the dark line has a perfect transition to a normal picture on the right and left edges it's probably a display issue, but if the right and left edges of the dark line are a slow transition to normal brightness it's most likely a back light issue. I'm sure you can youtube back light symptoms to get a better idea..
hi is it normal for samsung power supplies to turn on the leds on the screen when they are disconnected from the mainboard????
On some models i remember that being a normal.function.
Hello, just a quick question if you can help me..
ue55ku6400:
with all connected no boot - flashing backlight
with led strip cable disconnected it boot with image (checked with light)
do you think is led strip problem or power supply? thanks and sorry bad english
I can't say without doing tests, but LED problems are common.
My issue is the backlights keep flashing/blinking every half a second...it just keeps flickering...i unplugged that same connection that you did from power board to main board and it does the exaxt same thing...how would i go about troubleshooting
It sounds like your back lights are going out. I suggest watching videos on changing back lights in LCD TVs.
@@GrantsPassTVRepair thank you
So i have the same issue. Now if i unplug the main oard and the backlights stay on and i plug the mainboard back into the power supply and disconnect the top ribbon and the backlight comes on and sound comes on, but no picture, would that be a ribbon or main oard issue?
It's neither... It's a bad section on your led panel.... Google search "broken Samsung TV tape method"
Was tha backlight turning on and off and relay clicking?
If the relay was clicking I was not able to hear it.
My 11 Year old TV went wrong, I couldn't afford to buy a new one, but I could afford to get it repaired, thank heavens there are still technicians prepared to fix old TV's, the way the cost of living is going up, buying new will be a severe problem for many and if they can afford to buy one they will buy rubbish brands which wont last long and which will end up in landfill
Used TVs are a dime s dozen in these in my town if you shop at thrift stores and garage sales.
@@GrantsPassTVRepair Your very lucky, we used to be able to buy cheap used tv's, it seems so hard to find a good used one now, things change so quickly too, thank you for your reply and for the information you share :)
Hello, I need to replace a Samsung BN94-12747R Main Board for UN50MU6070FXZA Version AB15. I cannot find that version. Would I be able to use Version AA16 since that is the only part I am finding?
Thanks in advance.
Sorry but I don't know.
The tv is in protect.. That's why is not powering up...
I understand, but the most important question is why is the TV in the protection mode.
@@GrantsPassTVRepair I have a Samsung Un55d6005sf that has a standby light blinking 4 times, no sound, no picture. I replaced the power supply and it still does the same thing. I ordered a main board. I haven't recieved it yet, but I hope that fixes it. I tried the unplugging the cable to the main board and testing for the backlight, but that didn't work.
This youtuber covered other possibilities in greater depth than I did here. ua-cam.com/video/77tymvTJDxo/v-deo.html
Hello sir hope you can answer my question: I have the same tv with the same problem, i sent it to a shop for repair and when i checked they didn't repaired the problem but added a tape to bypass it.
My question is: is the mainboard and the t-con in this tv the same?
The image quality with the tape its not the best, i wanted to replace the T-con board to fix the problem but can't find it.
Thanks in advance.
Because I made this video a long time ago, I don't remember much about it, but based on what I see in this video, it appears that the T-con could be part of the main board, since I can't see a t-con board in this video.
New TVs have baked in unskipable ads, I would pay a lot of money to keep my old TV working.
I pay for youtube premium so I don't need to see all of their commercials.
@@GrantsPassTVRepair
Yeah, I use AdBlock for that. I'm talking about ads the TV shows even if you are watching video from an old VCR. This is not an internet thing. The ADs are coming from inside the TV. No network connection needed. I think they said the TV has a cellphone in it that it uses to get new ads or some such. It was an aside conversation on ua-cam.com/users/Level1Techs I can not find the exact video now. Wait until you buy a new TV, then you see what I am talking about.
@@OverUnity7734 How sad. I didn't realize this was happening. I've yet to see any TVs like this here in the US so far.