Tony

My PS3 died too after nearly four years so no warranty comeback. I followed This Video on how to fix it. I didn't have a heat gun though so I searched a bit more on the internet and found this video from the BBC consumer affairs program Watchdog. So I googled to see if anyone else had tried using an oven to do the repair. The general consensus seemed to be around 400F for 10 mins. I didn't have a tray so I wrapped the motherboard in tin foil and stuck it in the oven (pre-heated to about 400F for 10 mins.) I then let it cool down for 20 minutes and followed the video again for re-assembly. Worked like a charm for me PS3 is working perfectly again.