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I need advice on LED TV repair I have a LG 50ln5600 TV that has quit working and I would like to know if it is worth fixing.

TV= LG 50ln5600ui; symptoms=sound is good, no back light, image can be seen using flashlight. At start up, back lights flash and then go off. Same at shut down. Voltage reading at power board are within specs(3.4,3.4,0,24,0,12,12,0). Voltage at LED connecter settles at 76 and 76--it starts at 132. When this problem first appeared, the TV was turned off and upon restarting, it worked fine for several days but now its permanent. What is the problem/solution?

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LG has been having problems with the panels LEDs going bad. To get to them the panel must be disassembled by removing the screen and defusers, usually 3 of them. Make sure you reassemble exactly as you disassembled. After removing the screen and defusers, you can now power the set on and see which LEDs are not lighting. Gotta have a quick eye. You can usually locate a replacment LED strip on E-bay. This is not an easy repair. I charge $200.00 to do them. Hope this helps. :)

Posted on Apr 29, 2017

  • intocars Apr 29, 2017

    I was hoping that this was not the answer since the set did work for awhile after this problem first appeared and the voltage to the LED's seems reasonable. Thanks.



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Hello Dararius,
When you shine the flashlight at or near the screen and see the images, it means that the LEDS located behind the screen are not working. Since LED's don't usually blow out, it means that the LED driver circuitry located on a pc board inside the set is blown out and either needs to be repaired or just buy a new pc board from ebay such as the following:

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Is it 2 volts ac or dc?
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