IMac 24 inch Headphone jack issues

Discussion in 'iMac' started by meltingglass, Apr 4, 2008.

  1. meltingglass macrumors newbie

    Joined:
    Apr 4, 2008
    #1
    Hi I'm running an iMac 24inch on OSX 10.5.1 and have an apparent issue with the headphone socket. I have been using this to connect to an amplifier / external speakers and it has been working just fine, however now when the lead is plugged in the internal speakers can still be heard and no audio travels to the external amp. Any advice is gratefully received, as best I know there has not been any undue force on the socket. With thanks
     
  2. amiga macrumors 6502

    amiga

    Joined:
    Jul 12, 2006
    Location:
    London.
    #2
    Did you unplug the speakers for any reason? Its easy to plug them back into the wrong socket. It's a silly mistake but I've made it before. :eek:
     
  3. meltingglass thread starter macrumors newbie

    Joined:
    Apr 4, 2008
    #3
    Sadly I have the correct connection, thanks anyway
     
  4. amiga macrumors 6502

    amiga

    Joined:
    Jul 12, 2006
    Location:
    London.
    #4
    Ok, second thing to try is to go in to system pref and check the audio output... if it says 'built in speakers' change it to headphone out... or what ever is says.

    Hope that helps.

    amiga.
     
  5. meltingglass thread starter macrumors newbie

    Joined:
    Apr 4, 2008
    #5
    Hi, thanks for this. I'm actually missing headphones as an option under the Sound window, I just have internal speakers, which might explain it. Is there a way to fix this? Thanks again
     
  6. Leon Kowalski macrumors 6502a

    Leon Kowalski

    Joined:
    Sep 20, 2007
    Location:
    Gondwanaland Reunification Front HQ
    #6
    There are contacts inside the headphone jack that detect
    the presence of inserted analog or digital audio plugs, and
    automatically set the "Built-in Output" type to: "Internal
    Speakers" or "Headphones" or "Digital Output".

    Sounds like the plug-detection is failing on your machine.
    Try removing/re-inserting the plug several times and/or a
    light application of electrical contact cleaner (RadioShack)
    and/or or 90% isopropyl alcohol.

    LK
     

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