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This model TV had issues with the connector going from the power supply to the LED driver board, the solder contacts on the back of the board break loose, you can either solder the contacts if you have the means to do that or order a new board. If you're able to solder it, you will need a small tip for the iron and use lots of flux or the connectors will want to flow together, flux will keep that from happening
Feb 9, 2017 - My 32' LG LED TV has suddenly lost picture! The sound is alright but the screen is pitch black. ... Then completely black but with audio. ... I'm really hoping if I do the right research Ican fix this tv for my husband. .... Take the screen off hit power and watch LEDs if any don't flash its LEDs if they all flash its ..
If it's a led tv and if you have sound and, also, if you can see the picture with a flashlight very near on the screen in the dark, that means your backlight or your inverter circuit that control the backlight are defect. Good luck,
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https://www.youtube.com/watch?v=PWoz_-3OHIM
Jan 25, 2013 - Uploaded by Tampatec
Common LG LCD TV REPAIR - NO PICTURE OR BLACK SCREEN FIX ... I have a LG 42PM4700-UB plasma tv that justwent black. The red ... I had to keep turning on and off the TVseveral times for the screen to come back.
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https://www.youtube.com/watch?v=xUzCLgoSPGM
Sep 15, 2014 - Uploaded by ShopJimmy.com
LED & LCD TV How to Diagnose Symptom of No Image on theScreen CLICK ... Tv was working fine when left to go to store and came back to blank picture and ... my samsung tv it turns on but its completely black and no sound at all ... LG LCD TV REPAIR - NO PICTURE SCREEN FIX REVIEW - Duration: ...
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