Just received a FREE iMac G4 1.25GHz from work (we are phasing our ppc machines out). I set the machine up with Leopard for my brother and guests to use and was even using it myself. Everything was going fine and dandy, until about two weeks ago. I came home to find that it had died. It won't power on and doesn't make any fan noise at all. I'm guessing it's the power supply, but haven't had a chance to mess with it. Is there a place where I can buy a replacement ps for cheap? Any suggestions?