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harryb
User

Posts: 534

Re:SMU reset on G4? - 2009/03/25 16:00 Sounds like the power supply has tossed it in and at a price of US$270.00 new, looks like the end of another GE sadly.

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krowmagnum
User

Posts: 948

Re:SMU reset on G4? - 2009/03/27 01:10 Try unplugging the small ribbon cable that runs from the front switch panel to the logicboard. If the power button is bad you can still use a Mac keyboard with a power button.

If that doesn't work the PSU is most likely dead. You can test the output of the PSU

http://www.allpinouts.org/index.php/Power_Mac_G4_Mainboard_Power_Supply

Post edited by: krowmagnum, at: 2009/03/27 01:12

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