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Power Mac G4 Digital Audio not powering up
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Mac Elite
Join Date: Feb 2002
Location: Hilton Head, SC
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Offline
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For some reason when I it the main power button on my G4 the fan starts up and a red light turns on on the logic board but the system does not chime and the hard drive do not power up... any ideas what is going on?
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Addicted to MacNN
Join Date: Nov 1999
Location: Cape Cod, MA
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Sounds like you need to hit the PMU reset button, something I had to do with my G4 after a power outage.
Sorry about the smallish image, but you can see the PMU reset at the bottom left of this picture.
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Addicted to MacNN
Join Date: Nov 1999
Location: Cape Cod, MA
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You might also want to pick up a new PRAM battery, picture in the bottom right of previous jpeg.
It's a 3.6 volt 1/2 AA battery. You can get it just about everywhere that sells a variety of batteries.
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Moderator  Join Date: Apr 2001
Location: Fort Lauderdale, FL
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When resetting the PMU after a power outage or something similar, I never experienced the fans starting up on boot (before pressing the PMU button as a fix). It just did nothing.
Originally Posted by Tyler McAdams 
For some reason when I it the main power button on my G4 the fan starts up and..
Originally Posted by sek929
Sounds like you need to hit the PMU reset button, something I had to do with my G4 after a power outage.
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