[DOUBT] Power Supply

Hi guys! First of all, good afternoon and thanks for your help!

Recently my ps4 stopped work, it doesnt turn on.

I took it to a store to repair, but I think that they applied a blow to me. I think that they changed my GOOD power supply for another broken. So my question: Is the serial code of my PS4 the same as the components? What I mean, they match?

I want to know this in order to verify to make sure that they don´t deceived me!!

Can someone help me?