strange buzzing sound from mac mini

Discussion in 'Mac Accessories' started by Sossity, Dec 8, 2014.

  1. Sossity macrumors 6502a

    Joined:
    May 12, 2010
    #1
    I was not sure wheather this is to do with the mac mini or my speakers, so I posted here since it may have to do with speakers.

    lately, I have noticed a strange sort of buzzing sound that comes and goes, it is hard to describe, like radio buzz from a station with poor reception.
     
  2. rigormortis, Dec 9, 2014
    Last edited: Dec 9, 2014

    rigormortis macrumors 68000

    rigormortis

    Joined:
    Jun 11, 2009
    #2
    The buzz is coming out from external speakers? Or is the buzz internal to the Mac ? Does the buzz happen over head phones ???

    In guessing that it could be ground noise , like maybe you need a ground loop isolator ?

    Do you have something close to the Mac mini or speakers like a gsm iPhone ? That would do it

    Are you using optical spidif ? That shouldn't cause any noise and be impervious to any kind of interference

    You should try other things like I mentioned. Try different speakers , different. Headphones, a ground loop isolater ( get a good return policy!) , keeping a gsm iPhone away from your Mac or speakers and if you still have a buzzing issue then it's probably something with the Mac mini
    maybe the power cord of the Mac mini or speakers is worn out
    I don't have a ground loop isolater for my Prius so whenever I connect my iPhone using the aux cable I can hear the cpu working on my car radio
     
  3. waw74 macrumors 68030

    Joined:
    May 27, 2008
    #3
    mac mini doesn't have a ground pin, so ground loop shouldn't be an issue.

    check out the following on youtube
    https://www.youtube.com/watch?v=eH9hVYYC1qc
    https://www.youtube.com/watch?v=h1mlponX_jw

    if could also be the audio connector is not seated well, take it out, gently blow out the plug with canned air, check for corrosion on the connector.

    is it only when you're playing certain video files? if so it might be dolby digital, without a decoder, it sounds like static.
     
  4. Sossity, Dec 9, 2014
    Last edited: Dec 9, 2014

    Sossity thread starter macrumors 6502a

    Joined:
    May 12, 2010
    #4
    yes, I do have a gsm iphone near, not right next to but nearby plugged in and charging, could that be causing it? is it doing damage? to the computer, speakers or phone?
     
  5. rigormortis, Dec 10, 2014
    Last edited: Dec 10, 2014

    rigormortis macrumors 68000

    rigormortis

    Joined:
    Jun 11, 2009
    #5
    its been a known issue with gsm phones that if you place them too close to a speaker it can cause buzzing. its easy to rule out. when you hear buzzing turn off your phone. if it still makes a buzzing sound, maybe take the mini and the speakers to the genius bar

    i was trying to think of simple things that you can try to see if you can rule them out
     

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