iBook G4 Firewire no longer working

Discussion in 'PowerPC Macs' started by Moks, Jul 22, 2008.

  1. Moks macrumors member

    Joined:
    Jul 18, 2008
    Location:
    UK
    #1
    My 1.2 GHz G4 iBooks Firewire stopped working recently:mad:. Have tried zapping pram, reloading OSX etc but no luck. Fortunately USB is still working fine so I can still use my external 500GB hard drive:), but I can't download video from my aging Sony video cam:(.

    Any suggestions, other than chucking it and getting a new Macbook/Pro? (Which I plan to do sometime anyway, but would rather prolong the life of my iBook for the moment if possible)
     
  2. techound1 macrumors 68000

    techound1

    Joined:
    Mar 3, 2006
    #2
    You actually want to reset the PMU (rather than zap the pram) to try to clear up a port issue.
    A PPC's PMU (Power Management Unit) is relevant to:
    • sleep/wake issues
    • battery issues (such as not charging at all)
    • power-on issues
    • port issues (USB/FireWire ports appear dead).
    1. If the computer is on, turn it off.
    2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
    3. Wait 5 seconds.
    4. Press the Power button to restart the iBook computer.
     
  3. Moks thread starter macrumors member

    Joined:
    Jul 18, 2008
    Location:
    UK
    #3
    Thanks - will try when current DVD backup finishes (H264 encoding is sooo slow on a G4).
     
  4. Moks thread starter macrumors member

    Joined:
    Jul 18, 2008
    Location:
    UK
    #4
    No luck :(. I guess that means I have a good excuse to get a new macbook :) or macbook pro :D
     
  5. techound1 macrumors 68000

    techound1

    Joined:
    Mar 3, 2006
    #5
    Yeah, since your USB ports were working, I didn't have a lot of faith in the pmu reset working, but it's hard to beat a free attempt at repair ;)

    And who doesn't need an excuse to upgrade :D:D

    (and apple just released a batch of UK promo codes - check the thread in buying tips)
     
  6. TheReef macrumors 68000

    TheReef

    Joined:
    Sep 30, 2007
    Location:
    NSW, Australia.
    #6
    I'm not sure if zapping the PRAM is part of a PMU reset, but I'd try it:

    Command-Option-P-R
    (Hold on startup, and keep holding until you hear the second startup chime)

    I think I remember reading it fixing problematic FireWire ports on G4 cubes.
     

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