imac Intel 20" would not start after power failure.
After opening case, checked power supply output voltages with VOM. Found zero Volts on all pins except 1.21 Vdc on pin 5 and 3.41 Vdc on Pin 9. Saw only LED 1 lit. Replaced power supply, unit operating correctly. I was baffled at first on determining how to get inside the case, was amaze how easy it was after reading guides!
Quite easy using Ifixit tools and guides. 1. Technique: iMac Intel 20" EMC 2210 Power Supply Output Voltage Test. 2. Installing iMac Intel 20" EMC 2133 and 2210 Power Supply. Also found several videos on web giving step-by-step instructions. Thanks to those who put the guides together, I could not have completed the repairs without the guides.
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