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Rhyno_78
New Member
Last Activity: 11-06-2016, 07:29 PM
Joined: 11-06-2016
Location: Gamaliel, Arkansas
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  • LG 55LD520 Troubleshooting Help Needed

    Hello everyone. I am new to the site and looking for help in troubleshooting a LG Model 55LD520. I have narrowed down what I think is possibly the main board but wanted to seek everyone's thoughts here first.

    To start the tv when powered on would blink red 3 times and then change to brite blue for a second till it dimmed, but stayed on. No backlight was present nor the LG logo utilizing the "flashlight trick". Through a series of isolation on boards and connectors, here is what I found.


    On the power supply board, connector "P201", I have...
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  • Re: LG 55LD520 - No Backlights, No Image, No Sound (Lot's of Pictures!)

    Hello everyone. I am new to the site and looking for help in troubleshooting the same LG Model. I have narrowed what I think is possibly the main board but wanted to seek everyone's thoughts here first.

    On the power supply board, connector "P201", I have separated the "ERR" & "INV-ON" wires from the connector. By doing this, I get backlights on the tv, but no logo display. If I connect the "ERR" wire to the connector, I get a strobe effect on the screen....
    See more | Go to post

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