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Have power no screen but do have sound

Its a log37lw782

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Check and replace faulty component/s at its back-light inverter board, or replace the back-light inverter board as card basis. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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No picture sound ok rca 46la45rq


Sounds like backlight is dead. Shine flashlight on screen. Can you see video slightly. Replace inverter or some sets have inverter as part of power board. If led set replace led driver board. Also that may be part of power board.

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