Unusual monitor flickering, what to do?

Question

Monitors

There was a problem, some time ago the monitor began to flicker, the flicker gradually turned from weak to strong, and I thought that it was time to send the backlight lamps to a landfill, but it wasn’t there. The monitor is a Samsung LCD TV connected to the computer via HDMI, for lack of options, the computer is located directly behind the monitor. Flicker turns out to be temporarily eliminated by changing the brightness of the monitor, I also recently discovered that turning off the monitor from the outlet (namely from the outlet) helps. The monitor stood off for a day and, lo and behold, for the next 3 days it works like new. When flickering, I note that the brightness of the backlight sits down, after which it returns.
So far, my stupid head has only come to the conclusion that the radiation from the computer's power supply magnetizes a certain part that supplies voltage to the backlight. I would like to know who faced this and what exactly it is in fact.

Answer 1

I thought it was time to send backlights to a landfill

I thought right.
And what? Does it have any lamps?
Turn off the computer from the outlet, so as not to think, switch the TV to TV mode and see if there is a blink?