I managed to fix my TV (kinda) with the tape method as many of you suggested. My TV is the Samsung QE50Q65TAU so a Qled model form the year 2020. I had the exact same error going on in the Video and it is neither the PowerSupply nor the Mainboard so in my case replacing them would be useless, but that could vary i guess. I used the FrugalRepair video called: "I fixed a broken 4K 55” TV with TAPE | How to fix a TV with a blank screen" and used the same steps in evaluating which board and which pins are affected. For me it was the right side panel board and i fixed it by taping some pins corresponding to the Clock (CK1-8) lines on the little ribbon cable that goes from the first thin panel board on the left to the right one. It is still not 100% fixed as we checked each pin and narrowed it down it has to be Pin 9 and 11 starting form the left side. When we did not tape on of these two pins the TV would restart and cause the error we started with. There are still very noticable horizontal lines going through the TV but atleast it is working now and displaying a picture. We even left Pin 10 which was known good out and only taped very tiny pieces of tape on the Pins 9 and 11 but the image quality still would not imporve. We checked each diode on the Panel board called Clock 1 to 8 with a multimeter and measured that the clock 2 diode only displays ~1.3V instead of the usual 1.6V the other clock diodes measured. Is there any way to replace these soldered-on diodes? I think they are called SMB diodes and they are very tiny and not easily accessible. If anyone has some ideas which we could try to fix the missing clock lines and thus the worse image quality, i would gladly appreciate that. Good Luck to everyone!
It would be best to avoid QLED technology. Ordinary LED turned out to be very high quality and durable. I have an LG with a 3D display. It has worked without problems for more than 10 years and I am very satisfied with the picture.
The display has connected through COFs what's called a driver board. This is a long board on the left under the display and 2nd on the right. If your TV is bigger like 70" you'll have one in the middle in the newer ones like EU series, and than 2 connected with it on the sides. This driver board has a problem somewhere. You should not blame the MoBo as you did, nor PSU. Some of these repairs you can fix, some you won't. On this/my YT channel you have playlist TV repairs, I show some stuff, others still learning. Will post more when learn new types of faults.
I have same issue with my Hisense H50A6140 I replace de MoBo and turn on off issue back again. I will take my chances replacing the PSU, but i am afraid that the problem remains some where on the panel. The TV is from 2019 and it was working only 3h a day. How come it be faulty in 3 years? Maybe it is some kind of scheduling obsolescence. This phenomenon means that Tv was made to stop working after a certain time. I replaced mainboard and issue remains. Then i replaced PSU and the TV is now flawless.
What it does is it sensing a problem on the panel board. There's a is short one of the panel board. What you can is take off one ribbon at a time then plug it in then you will see which panel have a problem. If you found out which panel you can cover some lines by using a tape.
In newer Samsungs you've got only 1 LVDS connector and covering with a tape won't work most of the time. You have to understand the fault on the driver board and than try to fix it. Sometimes swapping the mainboard will help, but if it's a short on the display driver board, you'll have the same fault after some time. I had a customer who came back after 2 months. I'd never bet it would happen, but it did. So, either you know what you're doing, or you're guessing ;) IMHO.
Hi guys! I have a Samsung 55q90ra what doesn’t want to start! Only the logo with qled and disappears,doing this for 3times by itself!! Unfortunately no more warranty!! :(( any recommendations?
although you replaced the mb why not the pb? after watching your video my sense is the pb check the stb voltage and t he on voltage if it not within the v on the pb rr it
@@razvanu19 Faulty LCD panel, without the guarantee it would of been an economic write-off. Been fine since the repair. I wish you luck in finding a solution but I suspect it is new TV time for you.
If i get the ribbons out from t con it gets sound and stays on,and so are the back lights,but if I increase the volume it turns off and on again!! The display being completely disconnected!!
I have the un55mu6290fxza with motherboard model bn41-02568.. very similar problem but following typical diagnostic protocol it looks like it's the main board.. but due to it powering on the moment I plug it in makes me think it's the PSU.
you figure this out brandon? I saw a video showing it was a single pin in the cable fromthe psu to mobo.... others had bad capacitor on mobo... curious to see what yours was. about to go piick one up w ssame issue & will need to fis it
I fixed mine. What i did was took off the pwm pin on the cable connector from the power board then blocked the signals on my panel. You need to take off that cover at the bottom to see where the problem is. There panel on that has two separate board with ribbons, you need to disconnect those and not from the ribbon from tcon to your panel board.
Did you say you managed to fix yours? Mine is doing the same, i have worked out its a signal issue from the chip on scrron ribbons going to the tcon board which is telling the tv to reboot but not sure how i block that signal, seen a guy in another video do but cant quite get it working
That would be a panel issue. Synchronicity issue in panel if you figure out what side the issue is in you can use scotch tape to cover some pins on the ribbon cable
I actually tried this-- but it didn't work. I saw this ironically on a tiktok. I ended up tossing the TV and buying a new one. Had a bourbon as well to ease the pain.
@@lancek7533 yea or give them a good cleaning. Mine works but has lines both vertical and horizontal and I haven't had time to mess with it. I too tries the tape trick didn't do much. I think mine has an issue with the mainboard. I'm going to replace it and see where I'm at after that
i just watched a video showing it was othe 4th pin in the top cable going from the motherboard to the powersupply - had something to do with the backlight causing a short - or at least causing it to think it was a short He went through & tested the voltage from each pin & there was that ONE PIN in that top cord from PSU to MOBO - OPulled that pin only wa la worked. His channel is "Newsons electonics" video titled "Easy fix samsung smart tv keeps restarting. hope you didn't trash it... I am looking this up because someone is selling/giving away theiers in marketplace near me for 50 bucks, figured I'd see if i can fix it first before I drive & get it, watched a handful of videos all showing either motherboard reopplacement, or dumb little fixes (several replaced mobo & still no fix, his seems to be the culprit when its not a capacitor on the mobo ( saw a few of those too - easy if you''re okay with a solder iron Hope yya didn'tt bin the sucker
I’ve got the exact same tv and issue. Will be trying the tape method and checking the voltages from the psu tomorrow. Did you manage to get yours fixed?
Mines doing the same thing. Although, when I unplugged the speaker and then plugged the power back in, my problem came back. The light coming on and not staying on. Does anybody know if that means it's the speaker? Or is a cable/ ribbon connection issue? I see some people block the pins on the ribbons. Could I just straight up replace the ribbons? Anyone got solutions?
Hey Pickle-Rick!! I'm working on a similar issue. A new main board did not fix the issue. I've tested all of my LED's and they're all good. Voltages at the power board are steady, but they're abound 68 vdc. There's some info on the power board that states 129 volts for the 75" TV, but I can't find that voltage anywhere. I get the 13volts at each terminal on the power cable that I'm supposed to get. But when the ribbon cables are disconnected my Standby voltage is supposed to be 7.5v but I get 10.85v. The TV will stop cycling when either ribbon cable is disconnected, but if both are connected then it cycles again. I have a new power supply board coming, that I can return if it doesn't help. The fact that the LED's stay on and the cycle stops when only one ribbon cable is plugged in has me puzzled. I did think that perhaps the power supply board is not putting out enough current when both ribbon cables are connected, which is why I ordered the power board. Any ideas Cucumber Man?
1) disconnect one side of the screen see if you get a picture, if you don’t reconnect the screen and try the other side! 2) get a piece of clear sellotape about 1cm, and remove the lower ribbon cable on the main board and place the tape on the cable covering the top connections making sure the tape is folded over covering the brass coloured connections on the other side of the flat ribbon cable..plug it back into the main board and try it again 3) if that didn’t work, try the bottom of the ribbon same cable.. 4) repeat on the top flat ribbon if that didn’t help
@@wisher21uk Thank you! The cellophane tape did the trick, and got the power to stop cycling. But even with the new main board I had purchased, there were small horizontal lines across the screen. Therefore, I put the original main board back in and cut a narrower width of tape, around 2-3mm in width. It took several trail and error attempts to keep the set from cycling, but even with the small width of tape I have the horizontal lines. My wife knows I love to learn from things like this, but she's seen me put a lot of time into it. She came over with an ad from Best Buy for an early Black Friday sale; a 75" Samsung TV new for under $600. That's pretty amazing to me. This UN75RU8000FXZA weighs 85 pounds. I don't know if this new 75-inch is as good, but I'm baffled at how they can make and sell a similar TV for $600.
@@lancek7533 Bummer. I have the same issue. I narrowed it down to either the Main board or the LCD (nothing looks burnt or shorted on the LCD, but I don't know how to test it. I ordered a main board today and have my fingers crossed. I had recently repaired the TV but it had a different issue, which ended up begin solved by replacing the Power board. Now I think a google chromecast shorted something out. The place where I purchased my parts was fairly inexpensive and has 20% restocking fee, in case you'd like to check if they have yours. It was called TVpartstoday. From what I've researched, and it is apparent you have as well...your power board seems fine, but you never know. Good Luck!
Angel Carreon thanks! I was only looking on EBay but now that you mention, I’ll check out the web and see what I can find. I’m not sure based on the tests in a few videos I’ve seen that it’s the power panel- but worth the $80 or $100 to try. Good luck to you too
I have a similar issue. I did everything he did but when I took out the speaker and plugged the power back in, the TV started doing that on and off thing again. I unplugged power supply and the light stayed on like his did. I plugged it back I'm and took out the speaker and instead of staying on like his did, mine went back to malfunctioning as it was. So does that mean it would be the speaker that's messed up? Or the power supply board still?
I saw a video that semed to solve it if it wasnt a capacitor on the mobo - there is a single pin in the cable from mobo to psu that is wonky. Newsons electronics channel - easy fix video title.
Why spend money on a motherboard when you only need a piece of scotch tape that you can cover couple of the pins on the ribbon cable that goes to the panel. That one ribbon cable right by the speaker. put a tiny piece of tape in about the middle of it. TV will stay on with good picture. You wasting your time doing all that you are doing there.
I have got a qe75q6fnat with what looks exactly the same issue. Already replaced the mailboard, but issue stil there. When I disconnect one of the two flatcables the tv does not turn off anymore, backlight stays on, but no picture. Any one found a solution??
Solved: indeed in the back panel and solved it with the tape trick. After a lot of trail and error found the bottom flat cable on the mainboard I had to tape pin. 15-17.
@@aaronowens7620 hi Aaron, if you search for "repair led panel with tape" on UA-cam the first result is from a chanel called "FrugalRepair". He explained what is done as he blocks certain contacts on the flat cable leading to the led panel. The only problem is to find the right lines on the flat cable to block. On my qe75q6 it was the bottom flat cable on the motherboard and the sync lines I had to block were pin 15-17 from the right. I have a picture but cannot post this here.
I have a qn75q60 as well same issue but the tape trick didn't work on mine it stays on now but has vertical and horizontal line and I know it's missing vgh voltage I think my mainboard is shot
![Common! Not Another One! - 70" Scamsung LED TV Panel Driver Board Complex Repair [Video 13]](http://i.ytimg.com/vi/gRo5oHMKdrw/mqdefault.jpg)
I managed to fix my TV (kinda) with the tape method as many of you suggested.
My TV is the Samsung QE50Q65TAU so a Qled model form the year 2020.
I had the exact same error going on in the Video and it is neither the PowerSupply nor the Mainboard so in my case replacing them would be useless, but that could vary i guess.
I used the FrugalRepair video called: "I fixed a broken 4K 55” TV with TAPE | How to fix a TV with a blank screen" and used the same steps in evaluating which board and which pins are affected.
For me it was the right side panel board and i fixed it by taping some pins corresponding to the Clock (CK1-8) lines on the little ribbon cable that goes from the first thin panel board on the left to the right one.
It is still not 100% fixed as we checked each pin and narrowed it down it has to be Pin 9 and 11 starting form the left side. When we did not tape on of these two pins the TV would restart and cause the error we started with. There are still very noticable horizontal lines going through the TV but atleast it is working now and displaying a picture.
We even left Pin 10 which was known good out and only taped very tiny pieces of tape on the Pins 9 and 11 but the image quality still would not imporve.
We checked each diode on the Panel board called Clock 1 to 8 with a multimeter and measured that the clock 2 diode only displays ~1.3V instead of the usual 1.6V the other clock diodes measured. Is there any way to replace these soldered-on diodes? I think they are called SMB diodes and they are very tiny and not easily accessible.
If anyone has some ideas which we could try to fix the missing clock lines and thus the worse image quality, i would gladly appreciate that.
Good Luck to everyone!
It would be best to avoid QLED technology. Ordinary LED turned out to be very high quality and durable. I have an LG with a 3D display. It has worked without problems for more than 10 years and I am very satisfied with the picture.
The display has connected through COFs what's called a driver board. This is a long board on the left under the display and 2nd on the right. If your TV is bigger like 70" you'll have one in the middle in the newer ones like EU series, and than 2 connected with it on the sides. This driver board has a problem somewhere.
You should not blame the MoBo as you did, nor PSU. Some of these repairs you can fix, some you won't. On this/my YT channel you have playlist TV repairs, I show some stuff, others still learning. Will post more when learn new types of faults.
Where did you find the manuals for voltages etc ?
Samsung was replacing these screens as they have a short problem. Use a multimeter to find the short and replace the component
I have same issue with my Hisense H50A6140
I replace de MoBo and turn on off issue back again.
I will take my chances replacing the PSU, but i am afraid that the problem remains some where on the panel. The TV is from 2019 and it was working only 3h a day. How come it be faulty in 3 years? Maybe it is some kind of scheduling obsolescence. This phenomenon means that Tv was made to stop working after a certain time.
I replaced mainboard and issue remains. Then i replaced PSU and the TV is now flawless.
What it does is it sensing a problem on the panel board. There's a is short one of the panel board. What you can is take off one ribbon at a time then plug it in then you will see which panel have a problem. If you found out which panel you can cover some lines by using a tape.
In newer Samsungs you've got only 1 LVDS connector and covering with a tape won't work most of the time. You have to understand the fault on the driver board and than try to fix it. Sometimes swapping the mainboard will help, but if it's a short on the display driver board, you'll have the same fault after some time. I had a customer who came back after 2 months. I'd never bet it would happen, but it did. So, either you know what you're doing, or you're guessing ;) IMHO.
Hi guys! I have a Samsung 55q90ra what doesn’t want to start! Only the logo with qled and disappears,doing this for 3times by itself!! Unfortunately no more warranty!! :(( any recommendations?
although you replaced the mb why not the pb? after watching your video my sense is the pb check the stb voltage and t he on voltage if it not within the v on the pb rr it
This happen with my QE55Q90RATXXU recently, lucky it is still under the 5 year guarantee as LCD panel assembly was replaced as the fix.
Luck is made-up to believe in (just like movies and etc.) but we're all created with common sense. Just a heads up.
I do have a tv like yours,what is the problem? Unfortunately my warranty is expired!!
@@razvanu19 Faulty LCD panel, without the guarantee it would of been an economic write-off. Been fine since the repair. I wish you luck in finding a solution but I suspect it is new TV time for you.
If i get the ribbons out from t con it gets sound and stays on,and so are the back lights,but if I increase the volume it turns off and on again!! The display being completely disconnected!!
I have the un55mu6290fxza with motherboard model bn41-02568.. very similar problem but following typical diagnostic protocol it looks like it's the main board.. but due to it powering on the moment I plug it in makes me think it's the PSU.
you figure this out brandon? I saw a video showing it was a single pin in the cable fromthe psu to mobo.... others had bad capacitor on mobo... curious to see what yours was. about to go piick one up w ssame issue & will need to fis it
I fixed mine. What i did was took off the pwm pin on the cable connector from the power board then blocked the signals on my panel. You need to take off that cover at the bottom to see where the problem is. There panel on that has two separate board with ribbons, you need to disconnect those and not from the ribbon from tcon to your panel board.
Did you say you managed to fix yours? Mine is doing the same, i have worked out its a signal issue from the chip on scrron ribbons going to the tcon board which is telling the tv to reboot but not sure how i block that signal, seen a guy in another video do but cant quite get it working
Hi. I replaced the PSU (power supply board) and that's it! The TV is working again.
@@oquefizhoje are you saying power supply board? Please clarify…need help too. Thank
@@penhchetsophorn3051 yep. I replaced the power supply board. the tv is still working.
I did replace the power supply board and problem is still there for mine. Anybody tried something else?
😊😊
That's because there's an issue with the cell.... the blacklists work fine but the cell is fault. Screen replacement
The panel is the issue.
That would be a panel issue. Synchronicity issue in panel if you figure out what side the issue is in you can use scotch tape to cover some pins on the ribbon cable
I actually tried this-- but it didn't work. I saw this ironically on a tiktok. I ended up tossing the TV and buying a new one. Had a bourbon as well to ease the pain.
Maybe I didn't try this -- reading other comments-- I think I just replaced the ribbon(s) all together. CRAZY!!! Should have tried it.
@@lancek7533 yea or give them a good cleaning. Mine works but has lines both vertical and horizontal and I haven't had time to mess with it. I too tries the tape trick didn't do much. I think mine has an issue with the mainboard. I'm going to replace it and see where I'm at after that
You are so betlog in repair of this kind of tv you should know the sequence and try to fix but it didn't work
You did try disconnecting just the Wifi?
Bes kestim aynı değişmedi
i just watched a video showing it was othe 4th pin in the top cable going from the motherboard to the powersupply - had something to do with the backlight causing a short - or at least causing it to think it was a short
He went through & tested the voltage from each pin & there was that ONE PIN in that top cord from PSU to MOBO - OPulled that pin only wa la worked.
His channel is "Newsons electonics" video titled "Easy fix samsung smart tv keeps restarting.
hope you didn't trash it... I am looking this up because someone is selling/giving away theiers in marketplace near me for 50 bucks, figured I'd see if i can fix it first before I drive & get it, watched a handful of videos all showing either motherboard reopplacement, or dumb little fixes (several replaced mobo & still no fix, his seems to be the culprit when its not a capacitor on the mobo ( saw a few of those too - easy if you''re okay with a solder iron
Hope yya didn'tt bin the sucker
I did end up pitching it. I bought all new parts for every piece inside -- still couldn't get it to fire up. Unfortunately.
This didn’t work for me, same issue. I pulled forth pin
Did you tape the cables ?
I’ve got the exact same tv and issue. Will be trying the tape method and checking the voltages from the psu tomorrow. Did you manage to get yours fixed?
Hello i have samsung 75q8 and i have problem .there is no image, only the matrix backlight works
La mis tv samsung crystal uhd 43 il led rosso si è spento un paio di volte poi tutto tace. Cosa controllare? Grazie
falla de panel
Mines doing the same thing. Although, when I unplugged the speaker and then plugged the power back in, my problem came back. The light coming on and not staying on. Does anybody know if that means it's the speaker? Or is a cable/ ribbon connection issue? I see some people block the pins on the ribbons. Could I just straight up replace the ribbons? Anyone got solutions?
U need to tape it not use new ribbons (i tried) some weird way the tape works wonders
ua-cam.com/video/AoFacR3t6ag/v-deo.html&ab_channel=RepairAllTV
I have my sumsang tv that shows white red blue. What can be the problem?
ua-cam.com/video/AoFacR3t6ag/v-deo.html&ab_channel=RepairAllTV
подскажите какие контакты заклеили на шлейфе
Толкни, когда ответят. У меня такая же проблема))
Normally and 99% of the time it’s a screen issue which is resolved by blocking the clock lines to one side of the screen
Hey Pickle-Rick!! I'm working on a similar issue. A new main board did not fix the issue. I've tested all of my LED's and they're all good. Voltages at the power board are steady, but they're abound 68 vdc. There's some info on the power board that states 129 volts for the 75" TV, but I can't find that voltage anywhere. I get the 13volts at each terminal on the power cable that I'm supposed to get. But when the ribbon cables are disconnected my Standby voltage is supposed to be 7.5v but I get 10.85v. The TV will stop cycling when either ribbon cable is disconnected, but if both are connected then it cycles again. I have a new power supply board coming, that I can return if it doesn't help.
The fact that the LED's stay on and the cycle stops when only one ribbon cable is plugged in has me puzzled. I did think that perhaps the power supply board is not putting out enough current when both ribbon cables are connected, which is why I ordered the power board.
Any ideas Cucumber Man?
1) disconnect one side of the screen see if you get a picture, if you don’t reconnect the screen and try the other side!
2) get a piece of clear sellotape about 1cm, and remove the lower ribbon cable on the main board and place the tape on the cable covering the top connections making sure the tape is folded over covering the brass coloured connections on the other side of the flat ribbon cable..plug it back into the main board and try it again
3) if that didn’t work, try the bottom of the ribbon same cable..
4) repeat on the top flat ribbon if that didn’t help
@@wisher21uk Thanks! I'll try that this evening.
@@terryzak1742 just take your time don’t rush so cut the sellout about this big ---- may have to fiddle with the size of tape 😀
@@wisher21uk Thank you! The cellophane tape did the trick, and got the power to stop cycling. But even with the new main board I had purchased, there were small horizontal lines across the screen. Therefore, I put the original main board back in and cut a narrower width of tape, around 2-3mm in width. It took several trail and error attempts to keep the set from cycling, but even with the small width of tape I have the horizontal lines.
My wife knows I love to learn from things like this, but she's seen me put a lot of time into it. She came over with an ad from Best Buy for an early Black Friday sale; a 75" Samsung TV new for under $600. That's pretty amazing to me. This UN75RU8000FXZA weighs 85 pounds. I don't know if this new 75-inch is as good, but I'm baffled at how they can make and sell a similar TV for $600.
Samsung tv ue46d5700rsxzg NEUES MAINBORD BN-01660A-BN-04659B UND NEUES BN44-00423A-----www.youtube.com/@BMWGROUP-zw7bf/videos
Bro need to change open cell
Q82 lcd no didplay
Did you find a solution?
No. I replaced the board and still no tv. I think the lcd panel is burned. I was trying to find the power panel but I can’t find it on eBay.
@@lancek7533 Bummer. I have the same issue. I narrowed it down to either the Main board or the LCD (nothing looks burnt or shorted on the LCD, but I don't know how to test it. I ordered a main board today and have my fingers crossed. I had recently repaired the TV but it had a different issue, which ended up begin solved by replacing the Power board. Now I think a google chromecast shorted something out. The place where I purchased my parts was fairly inexpensive and has 20% restocking fee, in case you'd like to check if they have yours. It was called TVpartstoday. From what I've researched, and it is apparent you have as well...your power board seems fine, but you never know. Good Luck!
Angel Carreon thanks! I was only looking on EBay but now that you mention, I’ll check out the web and see what I can find. I’m not sure based on the tests in a few videos I’ve seen that it’s the power panel- but worth the $80 or $100 to try. Good luck to you too
Lance K I got the same problem and was about to buy the main board, but stop when I watched your video. Let us know if you fixed yours
@@zimyko Qe55q60rat. Same problem. Has anyone found the solution?
Bjr
The problem is the power supply.
I have a similar issue. I did everything he did but when I took out the speaker and plugged the power back in, the TV started doing that on and off thing again. I unplugged power supply and the light stayed on like his did. I plugged it back I'm and took out the speaker and instead of staying on like his did, mine went back to malfunctioning as it was. So does that mean it would be the speaker that's messed up? Or the power supply board still?
Qe55q60rat. Same problem. Has anyone found the solution?
I saw a video that semed to solve it if it wasnt a capacitor on the mobo - there is a single pin in the cable from mobo to psu that is wonky. Newsons electronics channel - easy fix video title.
please let me know if you solved it trrashed t or what, im about to go get one with the same issue & will need to fix it
thanks much
ua-cam.com/video/AoFacR3t6ag/v-deo.html&ab_channel=RepairAllTV
Why spend money on a motherboard when you only need a piece of scotch tape that you can cover couple of the pins on the ribbon cable that goes to the panel. That one ribbon cable right by the speaker. put a tiny piece of tape in about the middle of it. TV will stay on with good picture. You wasting your time doing all that you are doing there.
Watch whole video :)
Same situation with my Samsung tv , will appreciate if anyone knows a solution.
Thanks in advance
(see my comment above yous here if you still have tv or did you solve iit... if so what was it?
ua-cam.com/video/zGAVbMQrSek/v-deo.html
ua-cam.com/video/AoFacR3t6ag/v-deo.html&ab_channel=RepairAllTV
I have got a qe75q6fnat with what looks exactly the same issue.
Already replaced the mailboard, but issue stil there.
When I disconnect one of the two flatcables the tv does not turn off anymore, backlight stays on, but no picture.
Any one found a solution??
It's the panel itself that's bad I'm having the same issues and that's what the tech told me...
Solved: indeed in the back panel and solved it with the tape trick. After a lot of trail and error found the bottom flat cable on the mainboard I had to tape pin. 15-17.
@@nl2rma, I have the sane issue and I'm terrible at this. Can you explain this in greater detail?
@@aaronowens7620 hi Aaron, if you search for "repair led panel with tape" on UA-cam the first result is from a chanel called "FrugalRepair". He explained what is done as he blocks certain contacts on the flat cable leading to the led panel. The only problem is to find the right lines on the flat cable to block. On my qe75q6 it was the bottom flat cable on the motherboard and the sync lines I had to block were pin 15-17 from the right. I have a picture but cannot post this here.
I have a qn75q60 as well same issue but the tape trick didn't work on mine it stays on now but has vertical and horizontal line and I know it's missing vgh voltage I think my mainboard is shot
That's because there's an issue with the cell.... the blacklists work fine but the cell is fault. Screen replacement