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My TX-L50EM5B 50 inch tv turns off after about 2 minutes
All auto Turn off are disabled and the I will try the Blowing the dust out
ANSWERS:
"IT IS EITHER A BACK LIGHT LED. OR A BAD CAPACITOR ON THE POWER SUPPLY BOARD. IF YOUR LUCKY YOU MAY SEE THE CAP. TOP PUFFED UP COMPARE TO OTHER CAPS. ON THAT BOARD. IF YOU DON’T KNOW HOW TO TEST THE LED’S EMAIL ME AND I CAN WALK YOU THROUGH IT IF YOU HAVE A METER. WHEN CHECKING THE LED’S AND YOU HAVE TO REMOVE THE SCREENS MARK THE SCREENS SO YOU PUT IT TOGETHER RIGHT THERE IS SOME TIMES 3-5 SCREENS THEY ONLY GO ONE WAY. GOOD LUCK
SEAMORE
seamore1367@gmail.com"
"@nick ... if you have an image on screen but no backlight, this will come down to either your power supply led circuit, your mainboard backlight circuit (blon, on/off) or bad leds strips.
easiest way to figure this out is to take voltage readings at your power supply and match the readings at the connector leading to the main board and the backlight array against the printed legend on the board.
next would be to test the led strips themselves to see if any are shorted out.
plenty of reading material on this site and youtube/google already. ( search testing backlights, testing power supply)
youll either find your backlights are shorted, your power supply isnt providing voltage as it should or if they both check out, that only leaves the main board not sending proper signals to enable the backlight s to come on."
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