MacGenius8390

Q: PowerBook Won't Power Up

Hi, I have a PowerBook walstreet G3. I while ago when I updated from 10.4.9 to 10.4.11 using xpostfacto, The computer got stuck at apple logo (os 9 still worked fine). I did a backup and clean install of 10.2 and the computer would randomly spin up even if it was off and the green light on the hinge would go on, followed by shutdown. If it was off and it did this, I put pressure by trackpad to stop It temporarily. Now it doesn't respond to power button. Please Help me !!!!!

PowerBook, Mac OS X (10.2.x) , 266 MHz PowerPc G3

Posted on Oct 21, 2011 10:22 PM

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Q: PowerBook Won't Power Up

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  • by Texas Mac Man,

    Texas Mac Man Texas Mac Man Oct 22, 2011 6:25 AM in response to MacGenius8390
    Level 8 (46,611 points)
    Oct 22, 2011 6:25 AM in response to MacGenius8390

    Here's the take-a-part instructions for the Wallstreet http://www.ifixit.com/Device/PowerBook_G3_Wallstreet

     

    What size HD is in the PB? There's very limited space for OS 9 & X, plus some apps.

     

    Are you running from the battery or power adapter?

     

    You might disconnect the kbd & trackpad & try to boot.

     

     Cheers, Tom

  • by Texas Mac Man,

    Texas Mac Man Texas Mac Man Oct 22, 2011 6:37 AM in response to MacGenius8390
    Level 8 (46,611 points)
    Oct 22, 2011 6:37 AM in response to MacGenius8390

    Here's some info from the Service Manual.

     

    Computer won’t power up


    1 If sleep LED is continually on, backup battery power has been

    interrupted. Restart computer by holding down Shift-FN-Control

    and power on key. Wait 5 seconds and press power on

    key. If computer doesn’t restart, repeat 3–4 times.

    2 Try known-good power adapter.

    3 Try known-good, firmly seated, charged battery. Repeat once.

    4 Connect power adapter and restart computer in 3–4 minutes.

    5 Verify PMU cable is fully seated on I/O logic board.

    6 Disconnect internal keyboard and try powering up unit. If unit

    powers up, replace keyboard.

    7 Verify that microprocessor card is seated firmly in connector.

    8 Replace sound card.

    9 Replace power supply card.

    10 Replace PMU card.

    11 Replace I/O logic board.

    12 Replace microprocessor board.

     

     Cheers, Tom