Power Surge Damage to PSU PS5

I have a PS5…there was a power surge recently in my building while I was playing game. There was no effect on the game graphics…no lag nothing. But next time I switched it on just after turning on the switch there’s a delay of 15s after which I have to press the power button again. I don’t have an problem in my games nothing. Just the delay. Could the power surge have damaged my psu?

So the issue is after you press the power button it takes a while to turn on, or is it after you plug it in you have to wait a while before it will register anything?