I have an old Samsung UE55C8000XPXZT that after a storm started to shutdown itself after a few minutes of use. While I'm using it for the few minutes it stays on, it behave normally, after that the display flashes a couple times and it turns off (but the TV is still on even tho black screen and no audio). To revive it I have to unplug the power and leave it rest for a while.

Here is a video of the board: https://streamable.com/lvaxhh

Maybe someone can help me identify the issue. I'm quite affectionate to this TV and I'm all in for saving money and the environment without going for a new one.