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<blockquote data-quote="bkstroh" data-source="post: 795081" data-attributes="member: 84146">I have a PM G5 tower and have a simalar problemMine turns on fans kick on but nothing further.&nbsp; I know that the ram is good and right, have reset the pmu etc.&nbsp; I am down to the conclusion of power supply or motherboard.&nbsp; As mentioned earlier if the i get the beep it is the board.&nbsp; However i do not get that beep.&nbsp; My logic board only regsiters that something is not right when I remove the plastic casing, which then a red light pops on.&nbsp; In addition hoping it is the power supply i had it tested by a friend who has a little machine to test other macs and the main connector that the tester connects to did not register.&nbsp; I am not to familiar with the Powermacs yet and I'm wonder if the power is supplied to the fans through one of the other two connectors on the power supply.&nbsp; If anyone know which connector provides power to the fans that would be much helpful.</blockquote>

[QUOTE="bkstroh, post: 795081, member: 84146"] [b]I have a PM G5 tower and have a simalar problem[/b] Mine turns on fans kick on but nothing further. I know that the ram is good and right, have reset the pmu etc. I am down to the conclusion of power supply or motherboard. As mentioned earlier if the i get the beep it is the board. However i do not get that beep. My logic board only regsiters that something is not right when I remove the plastic casing, which then a red light pops on. In addition hoping it is the power supply i had it tested by a friend who has a little machine to test other macs and the main connector that the tester connects to did not register. I am not to familiar with the Powermacs yet and I'm wonder if the power is supplied to the fans through one of the other two connectors on the power supply. If anyone know which connector provides power to the fans that would be much helpful. [/QUOTE]

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