Mac Pro 3.1 making weird clicking noise

Discussion in 'Mac Pro' started by Gomff, Dec 8, 2012.

  1. Gomff macrumors 6502a

    Sep 17, 2009
    Hello everyone

    A friend of mine's Mac Pro (2008 3.1) is making a weird clicking noise intermittently. To me, they sound like the kind of clicks that static electricity makes and they're quite quick....About 3 or 4 per second.

    There doesn't seem to be any trigger or thing you can do to make it start...It just happens randomly and goes on for anything up to 20 minutes or until the machine is shut down and restarted. It seems like the noise is coming from the power supply. We've tried resetting the SMC but that made no difference.

    Does anybody know what this might be? I suspect his power supply is on the way out, but don't want to recommend he replace it unless I can be sure that's what it is. On the other hand, I'm weary about the issue getting worse and potentially damaging his Logic board.

    Thanks for any help or suggestions.
  2. GoCubsGo macrumors Nehalem


    Feb 19, 2005
    Clicking is often a hard drive dying. What's the S.M.A.R.T. status?
  3. Gomff thread starter macrumors 6502a

    Sep 17, 2009
    Hi, thanks for the suggestion....It's definitely not a hard drive click of death (I know that sound very well!). It's considerably louder.

    I will suggest he check the SMART status though just to be sure.
  4. turtlez macrumors 6502a


    Jun 17, 2012
    perhaps the power cable from the GPU has found its way to just be nicked by the front fans.
  5. DanielCoffey macrumors 65816


    Nov 15, 2010
    Edinburgh, UK
    Are all the fans clean? There could be something small that has been sucked in and is just touching a fan blade...
  6. Gomff thread starter macrumors 6502a

    Sep 17, 2009
    Thanks for the suggestions. There are no obstructions and the fans etc are clean (my friends blasts the machine with air every few months anyway but we checked the fans as well).

    The sound is definitely like something is sparking, rather than hitting something else....I'm convinced it's an electrical issue.

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