I have a 3 year old LG 37LC7D, 37 inch TV that powers up with sound but a bright white screen. After 10 minutes, picture comes in and TV works fine until it is turned off, then process starts again. I have replaced all capacitors on the PSB but this did not solve problem.
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: LG 37LC7D UK White Screen
Could also be the screen! seen this on a lg 42 lcdsigpicComment
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Re: LG 37LC7D UK White Screen
It sounds more likely the T-CON board is bad or the switched transistor on the main board that supplies the 12vdc to the T-CON board may be bad, you need to check and see if you have 12vdc on the surface mouted fuse on the T-CON board when you get white glowing screen.
You can download service manual from WWW.ELEKTROTANYA.COM
http://s807.photobucket.com/albums/yy352/budm/LG/Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LG 37LC7D UK White Screen
Example of bad LCD panel:
http://s807.photobucket.com/albums/y...m/LCD%20panel/Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LG 37LC7D UK White Screen
Thanks, ill check the voltage.Comment
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Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
Another TV topic!!
I got this sharp TV that when I first plugged it in it showed the sharp logo and then went to the input screen. This was about 30 seconds and then it showed white screen. Now I can't see anything but white screen. This has a separate TCON and Main.
The TCON is getting 12V and several parts are as well but the VGH line is only .5Volts which I thought is totally incorrect.
Am I on the correct assumption that the TCON is bad somehow if I'm only getting that voltage or is there something else I should check?... -
Hello,
I have a Dell G15 ryzen edition (ryzen 5) that turns on but won't post, black screen, keyboard lights on, caps lock led on, fans turns and the battery indicating light is showing 2amber and 1 white according to dell website it's a cpu failure, but i tried few basic things before i open it up i tested the screen by pressing the d button before powering it up but it didn't show anything i tried the ctrl+esc for bios recovery but still black screen i tried refreshing the screen, i plugged it on an external monitor but same thing. Next step i unplugged the battery and kept pressing the... -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
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