My Mac G4 tower won't start

Discussion in 'Mac Basics and Help' started by michael94043, Nov 28, 2009.

  1. michael94043 macrumors newbie

    Joined:
    Nov 28, 2009
    #1
    I have a Mac G4 dual 1.25 tower
    Doesn't start when I push the start button on the monitor or the front of the box.
    If I unplug it from the wall and plug it back in once or twice it starts
    I've replaced the battery and makes no difference

    What do you think
    Michael
     
  2. No ice please macrumors 6502

    Joined:
    Nov 21, 2009
  3. michael94043 thread starter macrumors newbie

    Joined:
    Nov 28, 2009
    #3
    I push the start button on the monitor and the front of the Tower
     
  4. Fishrrman macrumors G3

    Joined:
    Feb 20, 2009
    #4
    Have you tried resetting the CUDA button (I _think_ it's called that) on the motherboard?

    Drop down the case cover, you should see it towards the front of the motherboard, near the hard drive connectors. It's a small circular button in a square housing.

    Press it ONE time, and hold it down for about 30 seconds. Then try a restart.

    This worked for me once when the machine seemed "dead" (i.e., no response when power button pressed).

    Just to be sure, is the second motherboard battery you put in "known good"? (i.e., tested for voltage)

    If nothing else is working, you might try to "break-remake" EVERY connection inside the box: PCI cards, RAM, drive cables, etc. Even re-seat the battery again.

    - John
     
  5. Bensheim macrumors newbie

    Joined:
    Sep 27, 2007
    Location:
    England
    #5
    Replace the power cable?

    Test something else (like a desk lamp) in the wall socket you are using?

    I'd try those first.
     
  6. maccompaq macrumors 65816

    maccompaq

    Joined:
    Mar 6, 2007
    #6
    Suspect the wall plug. There could be corrosion on the wire terminals or the plug could be worn out. A new wall plug is quite inexpensive.
     
  7. michael94043 thread starter macrumors newbie

    Joined:
    Nov 28, 2009
    #7
    Went to the Mac Store

    Well I took it to the Mac store and the fix it folks think it's in the power supply

    Thanks Lots for your help
     

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