[spooky]

Do you still have the original component that was burnt off!

Its not easy to re solder them but it is possible, the problem comes if the pcb tracks have been burnt off as well. I have repaired an bum mod on an SCPH5502 before, a steady hand and small, not too hot soldering iron can do the trick, but by making a repair you may only find more problems!

Lippo... think you may have been using a mig welder! (lol)

The trouble these days is that it's a throw away society as far as technology is concerned. Things are made so small these days that you usually find that it isnt economicle to repair.

Your best bet would be to try and source a new main board for your ps1. Then make a decision if you think its cost effective!