2012 iMac 27 speaker/heaphones problem

Discussion in 'iMac' started by ansabakhan, Jan 16, 2013.

  1. ansabakhan macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #1
    some time when i start up my mac I don't get any sound in builtin speakers, speaker volume looks fine on the screen, but no sound.... this gets fixed it i plug in any headphones in my imac and plug it out... then the iMac internal speaker starts working... does any one know what the problem might be? how i can possibly fix this ? thank
     
  2. Confuzzzed macrumors 68000

    Confuzzzed

    Joined:
    Aug 7, 2011
    Location:
    Liverpool, UK
    #2
    That sounds like there may be something wrong with your DAC, which clicks between analogue and digital when you plag a jack in.

    I believe (you probably have to check with ifixit tear down to confirm), there's a small catch inside the jack. If you plug in a 3.5mm optical jack in, it flicks the catch, and you get an optical out instead of an analog jack out

    Hope that makes sense.
     
  3. Confuzzzed macrumors 68000

    Confuzzzed

    Joined:
    Aug 7, 2011
    Location:
    Liverpool, UK
    #3
    Maybe others can chime in if I am way off with my suggestion
     
  4. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #4
    thank you !!! i will try it and let u guys know how it went
     

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