Samsung QN800B 65” Rebooting, Overheating, and Screen Issues

[Tybello25]

My Samsung QN800B started rebooting itself, and the screen became extremely bright and uncontrollable. I managed to stabilize it by quickly switching to Filmmaker Mode, which reduced the brightness slightly. However, a black dot has appeared at the top of the screen, growing larger as the TV heats up.

Since the issue persists, I have stopped using the TV for over a week due to overheating concerns. Unfortunately, I no longer have a warranty

Has anyone experienced this before? Any suggestions on how to fix it?

 

 

[Anonymous]

Is that circle a front camera?

[Tybello25]

Is not a camera, it is the black dot i was referring to in my statement.

[mphatso]

4/

[mphatso]

Tg

[Tybello25]

I turned on the TV this morning after a long while, and suddenly the black dot has disappeared but the TV is now super dim, the brightness is not increasing the brightness anymore - I check the power saving options if it has anything to do with it but nothing. Also the TV is no more heating up...
Still looking for help to resolve all this issues