There are a few things it could be if you dont have picture but high voltage is there it could be your tripler that gos to tubes or maybe screen. adjustment located in tv be careful high voltage
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Sounds like you have have already answered your own question, if that board has burn marks its definitely bad. Now for the bad news, boards for older plasma sets go for a lot of money in most cases because they are highly sought after so the set may not be worth repair
Sounds like its stuck on picture in picture or pip. Is there a button on remote that says pip? Or try unplugging for a few seconds...maybe go to menu and reset settings to default.
My 32' LG LED TV has suddenly lost picture! The sound is all right but the Screen is pitch black. After switching it on the picture flashes for a second and then the screen goes completely black.
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https://www.youtube.com/watch?v=IBRE1Dcyxp4
Jan 13, 2012 - Uploaded by Clay Whitehead
TV Has Sound But No Picture Troubleshooting Guide - Duration: 2:30. by Repair.com 472,733 views. 2:30. LG LCD TV REPAIR -NO PICTURE ...
7 days ago - My 32' LG LED TV has suddenly lost picture! The sound is all right but theScreen is pitch black. After switching it on the picture flashes for a second and thenthe ... LG LED TV has no picture (black screen) but still sound - can it be fixed? Tags: ... a touch on the screen reveals nothing so it's not the back light.
Oct 9, 2012 - Brightness goes down, display draws less juice, and you can at least use .... it's the LCD's Inverter ... you have to replace it for it to go back to ... If the screen is turning off every two seconds or so and then it comes ... i turn my tv on it comes right on, but then after a few minutes turns off, .... Digital Trends for LG.
No display in monitor
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While it is playing, sound that is, try holding a flash light right up next to the sceen, preferably in a dark room, and see if you have any picture. You really have to focus on it and watch closely. If you can see any picture, you probably have a bad inverter. The inverter lights the back lights in the panel to illuminate the picture. The flash light basically does the same thing from the front. The inverter is the board on the far right with several of the same kind of wires disapearing down the side. Thanks. Let me know what you find.
Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)
I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions
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