Hi!

I have a slot loading iMac wich won’t power up. I took it apart and found that the fuse on the power supply was blown, so i replaced it with a new one but when i put the power cord back in it instantly blew again with a lightflash and a bang. So I investigated further and found a transistor (or whatever it is) that is attached to a big heatsing on the analogue board. So i figured that this must be the issue.

The problem is that the whole area on wich the text is printed on the transistor thing is blowns away so i can’t see wich number it has. It’s located on the right side of the analogue board if you view it from the front and and right beside it it sais “IC901″.

Does anyone have a clue wich number this one is?

Thx in advance /Zio

Try the Apple website using the serial number of your IMAC or call apple support, I am not too sure of the number 1 800 my apple or something similar and they will give you the part number. Replace the whole power supply unit.