Constant low hum with headphones plugged in

Discussion in 'MacBook Pro' started by MacbookSwitcher, Feb 3, 2009.

  1. MacbookSwitcher macrumors 6502

    MacbookSwitcher

    Joined:
    Mar 13, 2007
    #1
    Hello,

    I am experiencing a constant low hum whenever I have my headphones (Apple iPhone earbuds) plugged into my Macbook Pro.

    However, the buzz stops when:
    1) I unplug the power to the Macbook Pro
    2) I physically touch the Macbook Pro

    Any ideas on how I can fix this problem? The best I can do now is leave my power unplugged as long as possible, or make sure I always have a finger or hand on the machine. Both annoying workarounds.

    Thanks
     
  2. DMC-12 macrumors 6502

    DMC-12

    Joined:
    May 16, 2007
    Location:
    Nashville, TN
    #2
    Are you using the grounded three-prong extension cord?
     
  3. micsaund macrumors 6502

    micsaund

    Joined:
    May 31, 2004
    Location:
    Colorado, USA
    #3
  4. MacbookSwitcher thread starter macrumors 6502

    MacbookSwitcher

    Joined:
    Mar 13, 2007
    #4
    My friend, you are a genius! Plugging in the three-prong extension to the power adapter solved my problem!

    P.S. Here in Japan, most outlets are not 3 pronged, however the office I'm in happens to have three pronged outlets. Otherwise, I have to use a three-to-two prong adapter, which I hope will achieve the same effect.
     
  5. DMC-12 macrumors 6502

    DMC-12

    Joined:
    May 16, 2007
    Location:
    Nashville, TN
    #5
    Thank you, thank you. All in a day's work.
     

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