iMac G5 - No Idea

Discussion in 'Mac Basics and Help' started by scott:mac, Apr 9, 2009.

  1. scott:mac macrumors regular

    Joined:
    Feb 10, 2008
    Location:
    Great Britain
    #1
    Hey.

    I have agreed to look at my friends iMac G5.

    First problem was

    Blank screen - Nothing showing up, but when we shined a flashlight onto the screen we could see the desktop.
    =
    Backlight Inverter replaced.
    Still no joy
    =
    Continuous ON and OFF using PRAM reset for hours, then it came on worked fine.

    Next day we turned it back on - same problem.

    NOTES
    The chimes never appear to sound.
    The flashing white light doesnt always come on.
    The computer doesnt make a noise as if it were on.


    Please respond ASAP.
    Thanks.
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    I'm going to guess the logic board is going. It's the usual culprit when everything starts acting up, since... well, the logic board controls everything!

    That's strange about the backlight, though. I wouldn't associate that with logic board issues...
     
  3. TEG macrumors 604

    TEG

    Joined:
    Jan 21, 2002
    Location:
    Langley, Washington
    #3
    The iMac G5 did have some notorious P/S problems. Perhaps having that tested would be the best thing to do before trying to swap out other hardware.

    TEG
     
  4. MTI macrumors 65816

    Joined:
    Feb 17, 2009
    Location:
    Scottsdale, AZ
    #4
    Open it up and do a visual inspection of the logic board . . . particularly, checking for deformities of the capacitors.

    To inspect the power supply, you're going to need torx bits that have the tamper dimple, again to check the caps on the p/s board.
     

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