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i got a hold of the Apple Service manuals for Power Mac G5s and unfortunately there is not any more information other than checking for the 5V trickle charge

I'll try to locate one. Thanks

thanks for your reply. Can you give me specific information on how to perform the rest of the testing? Thanks

as i said, i checked all the power supplies according to directions given earlier in this thread

i checked all the batteries. they all show at least 3.6V

I realize it's a seemingly dead thread. I have 4 PowerMac G5 power supplies, all 600 Watts, that I have removed from G5s that would not power up. I have checked them all with the directions given at the beginning of this thread- using a voltmeter and spanning pins 1 and 23, all of them show at...