Why does my TV have Audio but no picture
Just purchased a new main board for my 65” Samsung QN65S90CAFXZA Smart Tizen TV.
The original issue is that my TV had audio but no picture. I did a backlight test and saw no images in a dark room with flashlight.
I have already replaced the TCON board and swapped out the main board last night.
Here’s the weird part. With the new main board plugged in there is absolutely no power to the tv no standby light or audio. However when swapped back to the original board it does indeed have the standby power light on and audio playing.
Has anyone ever ran into an issue like this before?
Any help is greatly appreciated
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@kalebscott the replacement main board is a new board and it is identical to your old one? Have you checked the voltages on your main board/power board connector when you connect the old main board? Check the standby voltage when connected to the old main board and then again with the new main board. Sounds like something is turning off your power board.
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