The only things I tried were removing the entire board, and then putting new paste on the sinks, then that didn't work so I tried to heat the entire board and reflash it, that didn't work either. Someone else said that one of the capacitors or something in the power supply could be faulty, so I bought a new power supply, put it in and... still YLOD. So I just gave up after dissasembling it 3 or 4 times, and losing about 25% of the screws in the process. So I gave up and gave it to Sony for $150 and they sent me a new one, so I won't complain about that part, but if it happens again, I'll probably try to fix it again or get a new PS3. Although I don't think the new ones are backwards capable and I play a lot of Ps2 and Ps1 games as well if I'm feeling nostalgic.