I have an iMac 400 DV SE Graphite that has been around so long she has a name in the house. She is Graylynn. Graylynn is an older girl at almost 8 years old. Graylynn recently was subjected to 4 power outages in less than 15 min. Now when I press the power button she tries (for less than a second) to power up. I think the power supply is shot. Has anyone preformed a mod to replace the power supply with another kind? I would put her into a G4 box if i had too. I have on hand a friend has donated for this if I have to.