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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
SAMSUNG UN75NU6900FXZA: Bad Main Board, Panel, or Power supply?



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Apr 30, 2023, 1:22 PM

Post #1 of 1 (686 views)
SAMSUNG UN75NU6900FXZA: Bad Main Board, Panel, or Power supply? Can't Post

So after using the Television for 3years in the same spot we moved and after 1 week in the new place, and while watching it, the screen went grey. I could still hear audio at that time. Then seconds later, the screen went black but again I could still hear audio. I unplugged the TV but when I tried to turn it back on, nothing worked. I get flashing light on the screen but it's non-responsive beyond that.

Below are two Short Videos of the condition I'm having with the TV:

Issue From the Front/Viewing Side

Issue From the Rear Without Cover

In my mind there are three different things that could be wrong.

1) The Main Board is bad. (Replace with BN94-13802A)

2) The Panel is bad. (Trash if so)

3) The Power Supply is Partially Defective or not sending voltage on all rails. (Can Check with a Multi-Meter)

Service Manual (Link)

None of the electronics show any shorting or damage but I'm not the best at seeing things on small PCBs these days.


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