Ps5 makes strange noises?

So when I switch off the ps5, it makes very strange noises for 10 minutes there's a crack every 10 seconds, which is relatively loud and my question is, what is it? And what could it be?
My ps5 is in good shape and has adequate ventilation

Ps: I don't have the stand, my ps5 is vertical

I would exchange them if I can.