Play station 5 does not work, why?

Question

Sony PlayStation

I bought a playing station 5, connected it to a TV set, there is a video signal and after 7-9 minutes it disappears.
I checked 3 different HDMI cables, everything works on the PC, but not on the soap factory 5.
What could be the problem?
I bought it in mvideo, I haven’t handed it over under warranty yet.