Buzzing PSU in my MacPro 2012

Discussion in 'Mac Pro' started by TzunamiOSX, Apr 3, 2016.

?

Does your Mac Pro 2009-2012 power supply buzzing similar to the video

  1. Yes, my PSU is buzzing

    6 vote(s)
    75.0%
  2. No, i have a silent PSU

    2 vote(s)
    25.0%
  3. I don't hear any buzzing in this video or from my PSU

    0 vote(s)
    0.0%
  1. TzunamiOSX macrumors regular

    Joined:
    Oct 4, 2009
    Location:
    Germany
    #1
    My PSU is buzzing and i need a feeback from other Mac Pro owners (my PSU was changed 3 times, an all are buzzing).

    Please, put your ear near the left side of the power connector, listen, vote.

     
  2. ifraaank macrumors regular

    ifraaank

    Joined:
    Jun 25, 2012
    Location:
    Odense C, Denmark
    #2
    Mine says this as well when I put the Mac Pro under load. :)
     
  3. iOrbit macrumors 6502a

    Joined:
    Mar 8, 2012
    #3
    i bought my 12 core 2010 MP from eBay recently, and noticed a buzzing sound (its not loud or especially audible above the other sounds in the machine) but its there. i don't feel it should make that sound but i don't know.

    the one in the clip sounds more aggressive to me, but its hard to say. i'll see if i can get a recording done.
     
  4. bax2003 macrumors 6502a

    bax2003

    Joined:
    Dec 25, 2011
    Location:
    Belgrade, Serbia
    #4
    My MP 1,1 PSU iz buzzing like crazy. 5,1 is silent for now.

    1,1 has Delta PSU, 5,1 has AcBel PSU.
     
  5. mostafiz28 macrumors member

    Joined:
    Feb 16, 2013
    #5
    Mine buzzes too but the noise is very faint. But its there.
     
  6. iOrbit macrumors 6502a

    Joined:
    Mar 8, 2012
    #6
    can anyone say in general if this is a sign of a failing PSU or something to worry about?

    I'm already worried about my GPU fan being noisy, but the GPU is a much cheaper fix than a Mac Pro PSU!
     
  7. ActionableMango macrumors 604

    ActionableMango

    Joined:
    Sep 21, 2010
    #7
    Could be a sign of dirty power. I had a buzzing power supply in a PC, then I hooked it up to a line conditioner and it became quiet.

    Unfortunately the line conditioner also buzzed, so that's not a great solution for someone recording music or whatever. The dirtier the power (quantified by LED indicators), the more it buzzed.
     
  8. TzunamiOSX, Apr 4, 2016
    Last edited: Apr 4, 2016

    TzunamiOSX thread starter macrumors regular

    Joined:
    Oct 4, 2009
    Location:
    Germany
    #8
    Than the Apple Store has the same dirty power, too. I have used a drinking straw to locate the buzzing, and it looks like the buzzing came from the big coil on the lower left side of the PSU. So it is not dirty power, it is a low budget coil.
     
  9. 666sheep macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #9
    Your poll lacks 4th option: I don't care

    These low budget coils are durable enough to last 6 and more years od 24/7/365. MP PSU rarily works with more than 60% load. Nothing to worry about.
     
  10. TzunamiOSX thread starter macrumors regular

    Joined:
    Oct 4, 2009
    Location:
    Germany

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