PC Question...

My dad’s pc was just sitting there, off, when he says he heard a loud “pop”, like somebody fired a .22 in the room. Now his pc won’t respond when you try to turn it on, and there’s a very faint burnt smell coming from the power supply. I think I need to replace it. How long should that take?

Edit: Part model # is NPS - 250CB A Rev:00

Just need to replace the power supply. Shouldnt take too long, but that depends on how many pieces of hardware you have in your computer. In the end you just need to disconnect things, one at time, from the old PSU and reconnect it to the new one. Power supplies come in standard size so after connecting everything mounting it back should be easy