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Helpful answers
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Feb 25, 2014 12:22 PM in response to Ungeniusedby Klaus1,Worth trying a few more times:
Resetting the SMU on a G5 iMac:
http://support.apple.com/kb/HT1767
and on resetting the PMU on a Power Mac G5, G4 and G3 :
http://support.apple.com/kb/HT1939?viewlocale=en_US
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Feb 25, 2014 12:41 PM in response to Klaus1by Ungeniused,I used to be a Mac tech (old school), guess I should've explained that. I tried SMU reset many times. The last time I tried it went back to OF mode and the external interrupt error came back again.
I don't know where else to get an answer for this. Any suggestions?
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Feb 25, 2014 2:35 PM in response to Ungeniusedby Klaus1,Could be a dodgy power supply. Where I live we get regular power outages, but it has yet to damage my G5 iMac.
(Cluching large piece of wood whilst writing that....)