Hey guys! I have a great shape iMac G4 (the 15", 700MHz model) that is refusing to power back on. It was working perfect till a few thunderstorms and I guess it is related. Pressing the iMac's power button doesn't feedback in any way - no sound, no lights, no screen, no fans, just absolutely no feedback. This led me to think the problem is the power supply unit. I want to fix it myself but after finding out that part could cost up to a 100$, I'd like to make sure that this is actually the problem. Do any of you guys have any knowledge to share of how I could be sure that the power supply is the actual broken part? Thanks a lot!!