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The late 2005 Power Mac G5 was introduced in October, and discontinued in August the next year. There were three configuration options, one dual core processor at 2.0 GHz, one dual core at 2.3 GHz with model number A1177, and one dual core dual processor (quad core) at 2.5 GHz.

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How to test the Power Supply Test

I was wondering if there is a way to test the power supply on this particular model. It has two molex connectors, P1 has 6 pins and P2 has 10 pins. I would like to find out the pin out scheme on the 1000 watt power supply...I've search and search, but cannot find anything as to this. I replaced the PSU, but I cannot get anything to power on. Ram, and HD, are removed. I've reset the PMU also, all I hear is a couple of clicks (very minimal in noise) but only when I plug the power cord to the mac. There are no light on built-in diagnostic LEDs on the main logic board.

Any help will be appreciated. Thank you.

Rispondi a questa domanda Anch'io ho questo problema

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Alex, best bet for that would be this site. Hope this helps, good luck.

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I think I've seen this site before..Thanks though..I will look further there..

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Alex sarà eternamente grato.
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