27" i7 iMac Clicking Sound (Lower Left)

Discussion in 'iMac' started by dwarnecke11, Nov 19, 2010.

  1. dwarnecke11 macrumors 6502

    Nov 29, 2009
    The hits just keep on coming with this thing :( First, it arrived with a massive glob of dust trapped between the backlight and LCD panel (still need to take to Genius Bar), then the PSU buzzing started and now it's making a random clicking/popping sound from the lower left.

    Its a very quiet sound but its noticeable in a quiet room. It appears to be random, but I can reproduce it by opening iTunes, playing a few seconds of a song, waiting at least 10 seconds in silence, then starting another song. *pop* and the song begins. This happens in QuickTime as well.

    What is going on here? I'm so exasperated right now, I wish Apple would just replace my troubled machine with a new one. :(
  2. dwarnecke11 thread starter macrumors 6502

    Nov 29, 2009

    Doesn't seem to do it over the audio out jack. When starting up or restarting, it sometimes pops before making the startup sound.

    Pops about ten times when loading The Sims 3 (right before EA logo).
  3. biggd macrumors 6502


    Apr 6, 2008
    You hafta return it sir
  4. dwarnecke11, Nov 19, 2010
    Last edited: Nov 21, 2010

    dwarnecke11 thread starter macrumors 6502

    Nov 29, 2009
    Alright I have some more information now that I've Google'd this issue.

    Apparently it was caused by the 10.6.5 update. Whenever there is 5+ seconds of silence, the audio hardware goes to sleep. When it is needed, it reawakens with a "pop" before it plays the requested sound. You can use the keyboard volume keys to reproduce the sound every time. Anyone reading this, give it a try. Let the iMac sit silent for 5 or 10 seconds, hit the Vol Up/Dn and listen for a quiet "pop" before the louder, proper sound check click.

    Still taking it to Apple to have them replace the LCD. Hopefully they will release a patch to fix this problem...

    EDIT: Reinstalled 10.6.4, popping persists. This iMac is becoming a real headache.

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