I'm dealing with an old Xbox, not a 360. I cracked it open just now and I couldn't see any obvious problems. I don't really know much about electrical stuff, but the theory is that something in the motherboard's circuitry is messed up. It isn't worth it to go through there and test em all, plus I don't know how to solder. I guess I will give up on my hope for a free Xbox and go buy one.
Thanks for the help though.