PSU Problems that could lead to other system issues?

[Justshoe]

Recently my PC died. Quick run down is ASrock939 Dual sata, opty 144, ati x850 pro, hitachi hd, and the psu was an antec smart power which i swapped out for a Raidmax hybrid2 630w PSU. Before the PSU swap hitting the power button did nothing no lights no fans nothing. After the psu swap i would get a brief moment of lighting and fans. I unplugged everything I could from the psu and mobo so that it had its best chance of posting. This accomplished nothing, so I figured the mobo was more than likely dead, i found a new asrock to swap in. Now it will keep all fans and lights on but not post and i get very scrambled graphics on the monitor. So i had an extra AGP version x850 laying around I threw in to see what would happen. It will still not post but just leaves a blank black screen now. So i guess my question is, will a PSU that cooks fry everything connected to it? Im thinking at this point i'm looking into buying a new opteron I have found many for fairly cheap untill i can wrangle up enough money to put together a nicer system.
I did pull apart the old antec psu to find a few blown resistors and capacitors so it was absolutely at some sort of fault. Just wanting to know how far the damage can go and is it a good assumption that the CPU is currently whats causing the no post/no boot.
Appreciate any helps thanks.

 

[Zero82z]

A PSU can damage other components, though it will not necessarily do so. The only way to figure out what works and what doesn't is by swapping around components.

 

[Siorus]

A PSU that fries can damage other components in the system, yes, and my track record with the antec smart powers (well over a dozen dead at this point) is that they habitually fry components when they fail. Sometimes just a few, sometimes everything in the box. CPU and RAM are both a distinct possibility for what you're experiencing, but there's no way to tell for sure which one it is (it could very well be both) without testing each one separately.

Also, I wouldn't trust that Raidmax unit as far as I could throw it unless someone on here can tell you who the OEM is and if it's decent or not; I didn't find any credible reviews in a really quick Google. It's suspiciously cheap and Raidmax has a track record of producing absolute crap though, so. if you can return it or re-sell it and replace it with something that can be trusted like a Seasonic or Corsair 400-500w, I'd do that just to be safe.