I bought my wife a used iMac that needed some bits and pieces. Hoping that it was the power supply and not the dreaded logic board, I ordered your power supply with overnight shipping. As promised, it was delivered early the next day and came in great shape.
Unfortunately, it was the wrong part for what the computer needs so essentially it's just $150 that I could have put towards the logic board. Worth a shot.
Process was fine, I had the computer open already and the piece went in and back out in minutes.
If you think it's the power supply, it's not...it's the logic board :(
Magnetic Pickup Tool
iMac Intel 27" EMC No. 2309, 2374, 2390 or 2429 Power Supply