How to understand if the video card is dying?

Question

Video cards

There is a Radeon rx5500xt graphics card. Yesterday some bugs with the image started. The screen blinks several times, for a second or two there are ripples instead of a picture (similar to the one that happens on TV when nothing is broadcast on the channel), then the screen goes blank. After a few seconds, it turns on and works as usual. If you turn off the monitor and then turn it on, the image appears immediately. Video card is 10 months old. During the game, the temperature is slightly above 60 degrees and the coolers work at 40-50%. Updated drivers - didn't help. Appears every few hours. Khan's map? How can it be diagnosed? Could it be the monitor itself? The monitor is already 8-9 years old and the image flashed periodically (there were waves, as a rule, when the image is mostly white). But I thought it was his backlight dying, but here something does not look like a backlight.