High pitch sound from late 09 iMac when adjusting volume

Discussion in 'iMac' started by tonyy, Nov 25, 2012.

  1. tonyy macrumors 6502a

    tonyy

    Joined:
    Oct 8, 2011
    Location:
    Dallas
    #1
    I'm having an issue with my iMac where a high pitched sound comes on when I try to adjust the volume or even watch a video on YouTube.

    It actually starts ringing every time audio comes out of the speakers. I can't tell if the high pitch noise is coming from the speakers themselves though.

    I searched around and found people had issues but that was when they adjusted the brightness. Mine doesn't make any noise when adjusting the brightness. Just all audio related. Anyone experience this?

    iMac specs are:
    Late 09 21.5"
    3.06 GHz
    Intel Core 2 Duo
    12GB Ram
     
  2. tonyy thread starter macrumors 6502a

    tonyy

    Joined:
    Oct 8, 2011
    Location:
    Dallas

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