Power mac G5 2004 won't power on

Hello all,
my Power mac G5 June 2004, won't power on at all. I've changed the logic board, power supply, dual processors, front panel board, and front panel board cable. Still getting the same results. The only thing I could think of next is the power button.
Please help!!!
M-One

m-one
No more wise guy stuff then.
If you have tried and thus eliminated everything else, then perhaps it is indeed the power button.
However, are you perfectly certain that it can be nothing else? Were all of the parts that you used for troubleshooting purposes from some other Mac or from some kit or did you purchase them or what?
Sometimes it can be more than one thing. And at different times. I am not sure exactly what the minimum configuration for a boot-up is but perhaps search for that and see what pops up. Reduce it to that and try it.
If you have a working Mac from which these replacement parts are coming it is not high on my list of favorite strategies but you can try plugging the suspect components into the working Mac one at a time until you find the culprit.
Are there any parts that you replace that require you to press the SMU reset although you have done it once? Perhaps a call to Apple or again search on that for suggestions.
Luck-
-DaddyPaycheck

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