Turn on a Power Mac G5 without pressing the power button

Discussion in 'PowerPC Macs' started by fernandovalente, Mar 2, 2012.

  1. fernandovalente macrumors 6502


    Aug 29, 2008
    Third world **** hole, I mean, Brazil

    My Power Mac G5 power button is gonne. It works sometimes, sometimes it doesn't. Is there anyway o turn the machine on without pressing the power button?

  2. eyoungren macrumors Core


    Aug 31, 2011
    ten-zero-eleven-zero-zero by zero-two
    Original G3/G4 keyboard perhaps? This one came with a powerswitch on the keyboard.

    Attached Files:

  3. Master Kenobi macrumors newbie

    Jun 11, 2011
    I am pretty sure that when Apple stopped making those keyboards and replaced them with the Apple Pro Keyboards without the power button they stopped putting the extra circuitry in the USB ports to support keyboard startup in macs released after that. Seeing as that was in 2000 I'm pretty sure the G5 powermacs will not be able to startup from those keyboards.

    The only thing I can think of short of fixing it is setting it to start up every day at a certain time, and reboot after power failure etc in system prefs to ensure that its always on when you want it.
  4. Chris230291 macrumors member

    Feb 22, 2011
    You can just short the pins out on the logic board with something like a screwdriver. You need to short the right ones though.

    I just crimped some thin wire to the correct pins on my G4, then connected a small micro switch to the other end for ease of use.
  5. jbarley macrumors 68040


    Jul 1, 2006
    Vancouver Island
    Not sure if it the same issue, but my G5 PowerMac has no problem starting from my Apple ADC monitor switch which is a USB function.

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