MacBook Pro picking up what appears to be an AM radio station? Help needed

Discussion in 'MacBook Pro' started by scottsummer21, Feb 15, 2013.

  1. scottsummer21 macrumors newbie

    Joined:
    Oct 17, 2011
    #1
    When I play movies while connecting my mid 2010 macbook pro to my projector using a mini display to VGA. Since my projector does not have an audio output I also run an aux cable splitting to my beats by dre beatbox and a speaker system. I stream the movies from my time capsule and play them through my mbp. The problem is when I am playing these videos I can pick up a static/apparent am radio station coming through my speakers. I cannot figure out what could be causing the problem but i believe that it has something to do with my macbook even though I can't figure it out. I have used different mbp's and this issue does not occur. This issue also occurs only when I am using the projector setup as well. I have tried plugging in headphones as well as playing the audio out of my speakers and this issue did not occur. I have also tried playing the media with both VLC and quicktime and the radio still plays. Since the events have started, I have ran a clean install of mountain lion and the problem is still there. I have no idea what could be causing the issue. any help is greatly appreciated.
     
  2. dastinger macrumors 6502a

    dastinger

    Joined:
    Mar 18, 2012
    #2
    I can't help you solve it but I can assure you that this is caused by hardware and it could not be an issue. I have a friend who had 2 studio audio monitors that picked up a radio station when they were turned on. It was a long time ago so I can't remember if it was an issue or a "feature".
     
  3. scottsummer21 thread starter macrumors newbie

    Joined:
    Oct 17, 2011
  4. Swiss-G macrumors 6502a

    Swiss-G

    Joined:
    Jun 3, 2010
    Location:
    United Kingdom
    #4
    Your audio cable is most likely acting as a radio antenna. Had this problem years ago with poorly shielded equipment. Used to pickup the local taxi firm.

    Try a different cable.
     
  5. scottsummer21 thread starter macrumors newbie

    Joined:
    Oct 17, 2011
    #5
    Thank you for the information! I will try this in the near future!
     
  6. amit715 macrumors member

    Joined:
    Dec 10, 2012
    Location:
    new york
  7. bobcan macrumors 6502a

    bobcan

    Joined:
    Jan 8, 2007
    Location:
    Sunny but Cold.. Canada
    #7
    Ding Ding Ding!!

    This is almost certainly The Answer.. a 'cheap cable' and an Unbalanced Audio Signal (which any MBP output will be) makes for a reasonably good possibility of unwanted RF (Radio Frequencies) being intercepted..

    Changing, or possibly Re-routing the cables, may well fix it!! :apple:
     
  8. scottsummer21 thread starter macrumors newbie

    Joined:
    Oct 17, 2011
  9. verseafterverse macrumors member

    Joined:
    Mar 17, 2013
    #9
    Well the old joke comes in to play here that could help try wrapping the cable in aluminum foil.
     
  10. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #10
    Actually not a joke, but could be one valid suggestion. Wrap the cable end-to-end with foil, and ground that foil (on one end only!)
    (might not really be practical with aluminum foil, but the concept to have the entire cable shielded is a useful one that WILL help eliminate signal interference.)
     

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