5 Replies Latest reply: Aug 24, 2013 1:01 PM by Jeremy Travis
maclover6 Level 1 Level 1 (15 points)

Hello All, I have an 800 MHz Quick Silver Power Mac G4 that recently started to act funny. When I press the power button the light comes on for a quick second then shuts off along with the computer. I have tried a PMU reset with no resualts. Any ideas?


PowerMac, Mac OS X (10.4.11)
  • 1. Re: Power Mac G4 not powering up
    kaz-k Level 4 Level 4 (2,445 points)

    Following tip would works.

     

    Removing the power cord

    removing the battery

    Pressing the power button

    leaving it alone for at least 20 minutes

    reinserting the Battery

    and the power cord

    Pressing the power button

  • 2. Re: Power Mac G4 not powering up
    maclover6 Level 1 Level 1 (15 points)

    Still nothing sadly. I have tried that and I tried to let it sit over night. Nothing worked.

  • 3. Re: Power Mac G4 not powering up
    Jeremy Travis Level 1 Level 1 (85 points)

    I had several G4's die on me with the same fault.

     

    I went through a procedure of stripping out any the PCi card ( I had some USB 2 cards and firewire cards fitted ) and the AGP video card.

     

    I then reset the cuda button. Took out and put back in, or replaced the pram battery.

     

    Put it all back together ~ held in the power switch and they booted up OK

     

    I don't know which of the procedures restored the mac and it worked on three G4 computers.

    I think they suffer from connector problems not making contact and just need some to fiddle about a bit.

     

    Sorry it's not a more scientific answer but as I said it worked on 3 computers that were exhibiting the exact same fault you described.

  • 4. Re: Power Mac G4 not powering up
    maclover6 Level 1 Level 1 (15 points)

    It worked, but as soon as I shut it down it started acting up again. I have replaced the pram battery so I can't imagine that it would be that. Would it be the connector like said above?

  • 5. Re: Power Mac G4 not powering up
    Jeremy Travis Level 1 Level 1 (85 points)

    One of mine has done that as well so I don't know.

     

    It was the G4 I had removed the proccesor from and and then put it back that this has happend to.

     

    The other two x G4 s I tired it with are still working, and of course I still have two G4s that did not have the problem.

     

    I will have another look at mine latter.