Samsung TV intermittent working, display issue

Hello,

I have a Samsung TV with code EU50AU5072 that has the following simptom: it works, all good, a small pixel line can be seen in a corner, but no problem. After 5-10 minutes, the display goes black ( YouTube short added: https://youtu.be/Qb4Z9ZltJkU) and enters reboot loop with 2 red flashes. After a while, it works again, then black, and so on.

I opened it, if I remove the ribbon that goes to the display, it starts, tried the tape fix, but no luck (I thought I got it 2 times, but it was fixed by itself, as before, so it's tricky with the tape)

Any ideas why it works intermittently?

Picture of product code

Hello @oldturkey03

Added pictures

If I disconnect the ribbon cable connecting the 2 driver boards, the TV stays on, but no picture on it.

So, that will be my area of focus for now ?