FSP300-60GTF - no 5VSB, PS_ON; 5VSB carnage

[kotel studios]

Hi,

Finally replaced all of the shorted 4148's and resistors and an blown tl431 on my FSP300-60GTF after 5VSB going crazy and destroying it self. Those components also made the secondary transistors appear shorted (while in reality they weren't).
Powered it on through my dim bulb tester and they (bulbs) only flash once meaning primary caps are getting charged, but that's it. No 5VSB, PS_ON voltages.
I am sure I have replaced the components correctly and that there weren't any shorted/blown traces left.

Any ideas where to go next?

[kotel studios]

The primary mosfet for 5VSB had cracked around the case and burnt (dead giveaway should've been the fact one leg of it showed 0mV).
While injecting 5vsb without the primary mosfet the PS_ON is getting generated (to be expected) but shorting PS_ON to GND does absolutely nothing with mains connected. I have no clue what is the issue. Primary side gets its voltage (proven by sparks when I attached my MM probe to one of the caps), so that shouldn't be the issue...