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  1. #1
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    G4 Powerbook keeps cutting dead.
    Hi,

    I have a second hand G4 PB that I love.

    When plugged into the electrical mains it works flawlessly however when I use the battery it works for a while and cuts dead when it feels like it not taking into account how much charge it says is on the battery gauge top right.

    Limiting myself to the wall outlet defeats the object of getting a laptop. So I bought a new battery but the same happens which has me baffled.

    If really annoying for three reasons.

    1 - You loose any work you were doing.
    2 - You have to reset the clock and input wireless routers wep kep on reboot
    3 - reboot from scratch takes a few mins as you'd expect, still annoying when you didnt ask for it.

    Can anyone please offer a clue to what is wrong here and how I fix it?

  2. #2
    G4 Powerbook keeps cutting dead.
    Kevriano's Avatar
    Member Since
    Jul 02, 2006
    Location
    Crawley, England
    Posts
    4,558
    Specs:
    20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
    Hmm. I would have said battery to start with, which you have done.
    It would seem that there is a fault with the actual power supply chain from the battery itself in that case.
    Not easy to check out though.
    Hopefully someone else can shed light there.
    Try my custom Mac Forums Search Engine: Mac Forums Google Search

    Please use the reputation system if you consider any help given useful (it's the little ✓/✘ on the left <---)


  3. #3
    G4 Powerbook keeps cutting dead.
    deus_ex_machina's Avatar
    Member Since
    Aug 06, 2004
    Location
    Tejas
    Posts
    1,713
    Specs:
    2GHz Mac Mini 2GB RAM 160GB 10.6.2 | MDD DP 1.25GHz G4 1.5GB RAM 10.4.11 | 233MHz iMac G3 10.3.9
    you should always do an SMC/PMU reset when getting a new battery. IF that doesn't help it then the internal battery isn't keeping the time either. That may also need to be replaced.

    Resetting PowerBook and iBook Power Management Unit (PMU)

  4. #4
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    Hi fellas and thanks

    Am trying this proceedure now from Deus's link:-

    PowerBook G4 (15-inch 1.67/1.5GHz)
    PowerBook G4 (17-inch 1.67GHz)
    PowerBook G4 (15-inch Double-Layer SD)
    PowerBook G4 (17-inch Double-Layer SD)
    If the computer is on, turn it off.
    Disconnect the AC Adapter and remove the computer's battery.
    Press and hold down the power button for 5 seconds and then release the button.
    Reconnect the battery and AC Adapter.
    Press the Power button to restart the computer.

    I must say though, im not convinced this repair will be so easy. Im guessing it will have to be sent off for repair.

  5. #5
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    na, hasn't done anything. It cut dead on reboot but thanks anyhow.

    Anyone else?

  6. #6
    G4 Powerbook keeps cutting dead.
    deus_ex_machina's Avatar
    Member Since
    Aug 06, 2004
    Location
    Tejas
    Posts
    1,713
    Specs:
    2GHz Mac Mini 2GB RAM 160GB 10.6.2 | MDD DP 1.25GHz G4 1.5GB RAM 10.4.11 | 233MHz iMac G3 10.3.9
    Under System Profiler, what does it say about your new battery?

  7. #7
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    sorry Ive only had a mac a month or so. Whats system profiler?

  8. #8
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    anyone? Id love to be able to fix this but am braced for an expensive repair.

  9. #9
    G4 Powerbook keeps cutting dead.

    Member Since
    Dec 09, 2007
    Posts
    178
    can anyone please advise me how to start system profiler?

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