LG led has black screen of death

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LG Television

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Mark @sprinklerman

Rep: 13

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Postado: 4 de mar de 2018

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LG led has black screen of death

Please help me peeps. i have a 55” LG led model #55LW5600. The screen literally faded to black as we were watching. Here’s what I’ve determined so far. The flash light trick does NOT work. There are no back lights what so ever. I ordered a T CON board prematurely thinking that was the problem. I was wrong. I tried the hair dryer trick on the main board with zero success. Check out this link:

http://pages.sssnet.com/test/LG_55LW5600...

Check out the test on page 58-59. Apparently the SMPS and Inverter are OK because the back light came on during test. All i can assume is that its the main board. Don’t want to just spend that money like i did on the T CON board. Need some assistantence from an expert before I take this thing out back and fill it with holes about 9mm wide. Thanks in advance for your time and I eagerly await for you’ll’s advice!

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Mark,

Did you end up figure out the root cause. I seem to have same issue with my TV, same model, does not turn on display, no sound. On switching on this set red LED comes on and flashes once and end up as white.

Even I suspect T CON board as culprit but haven't run any of tests.

Cheers

29 de jun de 2018 por shanan

2013 lg turn black use it with power plant with hurricane maria did it burn

23 de nov de 2018 por arroyojuanitam

2013 lg blackout use it with hurricane maria with power plant did it burn

23 de nov de 2018 por arroyojuanitam

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Mark,

Did you end up figure out the root cause. I seem to have same issue with my TV, same model, does not turn on display, no sound. On switching on this set red LED comes on and flashes once and end up as white.

Even I suspect T CON board as culprit but haven't run any of tests.

Cheers — shanan
2013 lg turn black use it with power plant with hurricane maria did it burn — arroyojuanitam
2013 lg blackout use it with hurricane maria with power plant did it burn — arroyojuanitam

oldturkey03 @oldturkey03 Rep: 782,4 mil 1,1 mil 893 2,3 mil · Answer 1 · 2018-03-04T21:48:21-07:00

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oldturkey03 @oldturkey03

Rep: 782,4 mil

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Postado: 4 de mar de 2018

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@sprinklerman if you check on the test and your backlight turns on while applying the jumpers, I would think it is your power supply that doesn't get the signal to turn the backlight on. Of course you checked F101 and F501 for proper voltage as indicated on page 55. You need to let us know if you had the right voltage going to the main board while performing test #1. Your main board is usually one of the last causes of a totally black screen.

added location and layout of Q504