The 7805 is your 5v regulator if you over amperage it then it will die due to not being able to dissipate the heat. You could always take it to a pc repair shop if you're not confertable doing it on your own its a really easy task for someone that can solderKalessinDB wrote:The underside of U7 there (which, if I'm not mistaken, says 7805 on the side of it -- I reassembled it and don't feel like stripping it down again) is where I was referring to the "scorch marks" which may have been a bit of an exaggeration. The brown discoloration there, and it seems to have bubbled slightly (which I'm aware I did not photograph well - these were quick cell phone pics).
But that being said, this is heartening in that it's likely to be an easy fix. Probably for someone else, since I would likely make it worse not better... I really need to find something to practice soldering on.