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Flashing red standby light (3 times)

LG 39lb580v the standby light will flash 3 times and tv wont turn on, before this it had no pictures but sound. I have checked the capacitors etc and visually all seem fine.

Is it likely power board fault or main board.

Update (10/02/2019)

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Contesta esta pregunta Yo también tengo este problema

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3 Time led blinking standby

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@matyh72 that is usually backlight related. you need to measure the voltages from your power board to the main board as well as a the voltages on your LED connector. Let us know what those voltages are. Post some good pictures of your boards and cable sso we can see what you see. Agregar imágenes a una pregunta existente

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Hi @matyh72 ,

please find the answer in this topic, there is also chat with an LG support.

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Seen that before, and it doesn't work for mine, tried it with no joy.

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Are u sure?

Your problem is loss connection GPU with mainboard

For fix this problem

1.open back cover

2.separate mainbord from metall cover dont forget disconnet all wire or flat connection with main board

3.remove big heat sink from main board you have to see one processor (LG-XD ENGINE)

4.reheat it with flux for 40 seconds

Now your problem is fix

If not fix , you must reballing this processor with infrared heater

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it's work :

https://www.youtube.com/watch?v=HAy2UN-n...

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Mat estará eternamente agradecido.
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