1 TV is flickering with white and black lines.
Samsung qled QE55QN85AAT
My TV suddenly started displaying vertical colored lines across the entire screen, mostly white and black. There is no visible crack, impact mark, or external damage to the panel. The TV was working normally before the issue appeared.
TV powers on normally.
The backlight appears to be working.
The entire screen is covered with vertical lines and distorted colors.
No visible physical damage to the screen.
The issue appeared suddenly during normal use.
Power cycling the TV did not resolve the problem.
All cables and external devices have been checked and disconnected.
Is this a good question?
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1
@dditt do you still have sound on you TV? Post an image of what your screen shows with your question. That way we can see what you see. Adding images to an existing question
The issues could be a bad mainboard (the T-con circuitry is on your main board) but it could also be the cables etc. Again we would need to see the inside of your TV. Remove the back cover and take some well focused pictures of the boards and how the ribbon cable interconnect, with your question.
by oldturkey03
Sound works well
by Dditt
I uploaded the pictures
by Dditt
@dditt I do not like those Horizontal lines on top of the screen. This could b a bad panel (failed buffer boards). See if you can find the long skinny boards that connect to the LCD panel. Post some pictures of those with your question as well. If you can get an inexpensive mainboard, you can try to replace that first and see if it makes a difference. Also, check the ribbon cables. Make sure those are seated properly and that the copper ends are not corroded etc. You can clean those with a soft brush and some high grade isopropyl alcohol.
by oldturkey03