My several years old screen started having a problem that prevents me from using it altogether- the moment it starts displaying anything (my desktop for example, or the no signal error) it immediately loses power and turns off for ~2 sec, initiating power up again and repeats.

Ive tried switching the screen's power supply and it worked at first (however the new power supply was rated for 1 volt higher than the screen, which shouldnt be a problem), but 2 days later the same problem occurs again. Does anyone have an idea of a fix or do i just need a new screen?

Is it possible that a screen malfunction made both power supplies break?