2009 Mac Pro won't turn on, turns off

Discussion in 'Mac Pro' started by rondocap, Jun 30, 2012.

  1. rondocap macrumors regular

    Joined:
    Jun 18, 2011
    #1
    So recently my 2009 Mac Pro has been turning off randomly. Now, I was able to get it to stay on for 20 minutes, then it turned off and now wont even start.

    The power light wont even turn on - it clicks but nothing happens.

    What could be the issue? It's been hot lately, and I do have 4 hard drives and an Nvidia 6870 gpu.

    Even with cpu temp in the 30's, it still shutdown and wont turn on.

    Is it the psu? What can I do?
     
  2. FrankHahn macrumors 6502a

    Joined:
    May 17, 2011
    #2
    It may be caused most likely by the failing HDD. The failing GPU may be also a cause.
     
  3. prvt.donut macrumors 6502a

    prvt.donut

    Joined:
    Jan 1, 2008
    #3
    Failed HDD, would still at least post and ask for a drive.

    Failed GPU would also have the fans kick in as tried to boot.

    Sounds like a failed PSU
     
  4. rondocap thread starter macrumors regular

    Joined:
    Jun 18, 2011
    #4
    What's weird is that it will turn on and work fine for 20 minutes, then shutdown by itself, and for a while will fail to turn on, but after some time will eventually turn on again.


    Is it likely the psu? Hard to change?
     
  5. initialsBB macrumors 6502a

    Joined:
    Oct 18, 2010
    #5
    Sounds like it, but you'd have to test it properly before changing it. Have a look at the Apple Service Manual for the 2009 Mac Pro, they have the standard procedure.

    That said manual states :
    It's pretty easy to change the PSU in a Mac Pro, but it will probably be a bit pricey for the spare part.

    Found this one in the UK :
    applemacparts.co.uk
     
  6. rondocap thread starter macrumors regular

    Joined:
    Jun 18, 2011
    #6
    It's been very weird. I changed the outlet that it was plugged in to, and it's been on now for a few hours. I also have the room cold with the AC on.

    I am curious what may be going wrong, is it possible the electrical outlet was the one that was bad?

    There was also a storm here the night it stopped working well. Maybe something happened..
     
  7. rondocap thread starter macrumors regular

    Joined:
    Jun 18, 2011
    #7
    So an update - I plainly switched the outlet it was connected to, and I have not had the problem return.

    Mac Pro is fine, so I think it was just the outlet. It was plugged in through a power surge strip.

    That's weird, has this happened to anyone before?
     

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