Hi All

A friend o mine had a Mac G5 with defective PSU and the mac was not booting.

I had the idea of using a PC AT PSU and moved the pins to the mac connector. Ive found a few diagram about other people that have done it.

PC ATX have 24 pins, Mac connector 22.
For the 24 Volt, i used an old HP LAserjet 4 plus PSU, and the 24 V is on the Jumper 103, Blue and red wire. I connected those to the 21-22 mac connector as displayed on the pinout.

here are some pictures:

Mac booting
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Re: New Members - please post your introductions here

Hello My name is Michel, im a computer tech for schools here in Canada! im 46 and my passion are Volkswagens car and computers / Rasberry Pi / gaming /bitcoin mining.

I went a few time on this site, for different problem, like capacitor problem in LG monitors and other references. Ive made myself a tutorial about G5 Mac with defect power supply, ive used a PC PSU and a hp laserjet 4 PSU for the 24 volt, and since i need to be registered to post, here i am!!

have a nice days folks