G4 - power problem

Discussion in 'PowerPC Macs' started by rediffusion, Jan 18, 2007.

  1. macrumors regular

    rediffusion

    Joined:
    Jun 26, 2006
    Location:
    Brooklyn NY
    #1
    Hi,

    I tried starting up my G4 this evening and although the startup button lit up nothing happened. There is obviously power going to the machine for this button to light up but why won't it start up? Might there be a fuse that has blown?

    Any help would be gratefully received as the Mac has all my work & music on it :(

    thanks,
    Rich

    PS here are the specs:

    Machine Name: Power Mac G4
    Machine Model: PowerMac3,4
    CPU Type: PowerPC G4 (11.3)
    Number Of CPUs: 1
    CPU Speed: 533 MHz
    L2 Cache (per CPU): 1 MB
    Memory: 896 MB
    Bus Speed: 133 MHz
    Boot ROM Version: 4.1.8f5
     
  2. Moderator emeritus

    mad jew

    Joined:
    Apr 3, 2004
    Location:
    Adelaide, Australia
    #2
    If you have access to another Mac and a Firewire cable, use Target Disk Mode to back up all your data. Can you try booting from the OSX restore discs? I doubt it'll get any further, but it might be worth a try. :)
     
  3. macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #3
    Try resetting the PMU.

    http://docs.info.apple.com/article.html?artnum=95037
     
  4. thread starter macrumors regular

    rediffusion

    Joined:
    Jun 26, 2006
    Location:
    Brooklyn NY
    #4
    Thanks for all your advice but it turns out that my PRAM battery is flat.
    Everything has been fixed by spending $15 on this :)

    thanks,
    R ;)
     
  5. macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #5
    It's usually either the PMU or the PRAM battery.
     

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