Audio jack hum early 2008 MBP

Discussion in 'MacBook Pro' started by gonnabuyamac, Jan 13, 2009.

  1. gonnabuyamac macrumors 6502

    Sep 26, 2006
    k, this is a random issue. While listening to headphones on my MBP, I have noticed a low hum when my computer is plugged in. However, when I unplug my computer, it goes away.

    And here's the really weird part. When my MBP is plugged in, and I touch any metal part of the computer, the hum goes away. But, if I take my hand off the computer, the hum returns.

    Could there be some sort of power leak, grounding issue, or something weird going on with the computer?
  2. Consultant macrumors G5


    Jun 27, 2007
    Sounds like ground loop issue. Probably will go away if you use the 3 prong power adapter.
  3. Craigger macrumors newbie

    Nov 13, 2008
    I had this issue, but it would hum any time I used the trackpad.

    after 3 replacements, I am now typing on a replacement unibody.
    I like it.
  4. gonnabuyamac thread starter macrumors 6502

    Sep 26, 2006
    You got it replaced for that issue?
  5. SchneiderMan macrumors G3


    May 25, 2008
    they will replace anything you don't like trust me..
  6. Craigger macrumors newbie

    Nov 13, 2008
    I took it into apple twice for a fix, and on the third try I called in. They said instead of sending me a replacement they would be sending me a "new" computer with 250gb instead of 200 gb, and 4 gb of ram instead of 2.

    Sweet deal seeing as I essentially paid $1550 for an upgraded unibody MBP

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