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I don't know your TV but are you sure that it is an "LED" TV? If not, it may be an "LCD" TV which is a bit different. An "LED" TV uses Light Emitting Diodes to illuminate the individual pixels or PIcture ELementS. If it is an "LCD" TV, the picture works more like an electronic digital watch. The picture is produced within the screen and uses a florescent tube on the bottom and side to back light the screen. If you can see the picture with a flashlight, I suspect that it is an "LCD" type. If it was an "LED" TV, and it didn't light up, the LED's that make up the pixels wouldn't be firing and you wouldn't be seeing a picture even with a flashlight. Just like any florescent light tube, these "LCD" back light tubes will dim with age until they eventually fail. If the Toshiba logo lights and goes out, this sounds like the bulbs or their high voltage drivers are failing. Good luck.
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 ...
Tv turn on now have a flashes of picture ony a few sec. than dies have sound left only?Yes,than ur tv have a long board call the LCD inverter is dead.This long LCD inverter board help the LCD sccreen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish long LCD inverter board for the replacement.
My Kenmark Tv Switches its picture off if the PSU voltage drops. Audio is OK but picture does not return as PSU voltage goes back up. PSU's are about £10 online !2Volt 4A Might be worth a punt
turn tv on picture comes up 2to3 seconds later tv blacks out then stand by red light flashes 4 times in a row repeatedly..can not turn on or off when stand by light starts flashing but before tv blacks out you can turn tv on and off repeatedly and picture and sound work.You have to unplug power cord for 30 seconds after stand by light comes on to get tv to turn on.
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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