Why doesn't my PS4 turn on? PS4 is dead!

So my ps4 doesn't turn on at all. That means no light or beep. Then I sent it to sony repair center and said there was a infestation of bugs so it voided the warranty. Does that mean my ps4 power supply isn't working which I can fix or it can be something else. ALSO let me tell how it all happened. I turned on my ps4 then I walked out my room to go to the restroom. Then I heard a pop sound but I wasn't sure it was my ps4 but then it wasnt on and it never turned back on. The weird thing was that there was no smell. PLEASE SOMEONE HELP!