Reflow & Reball the solders.. unfortunately you'll have to find someone who can do that and have the proper setup to do so. I had my electrical engineer colleague reflow with lead solder on my bricked 60 phat a few years ago when it had YLOD on me. That plus cleaning the fans and my phatty still kicking like brand new, also is whisper quiet. This was about 2.5 years ago. Reheat unfortunately will only buy you a bit of time cus the original solders are the weak link. All you're really doing is hoping the heat from the heat gun, blow dryer, oven, etc. softens the broken solders enough to make contact with eacother again. Also, heating like that could cause more harm than good on the motherboard and other components.
I'd almost wager that my reflowed should last a good long while.. pretty important if you have a big collection of ps1, ps2, and ps3 games like I do.
Man.. I hate it when your girl has to leave my place to come back to you..
