Weird Sound Issues on MBP

Discussion in 'Mac Basics and Help' started by FluJunkie, Sep 17, 2008.

  1. FluJunkie macrumors 6502a

    Jul 17, 2007
    Alright, I'm on a 2.4 GHz MacBook Pro, just updated to version 10.5.5.

    Today, it seems some strange sound output issue has cropped up.

    Using either the laptop's built-in speakers, or the headphone jack connected to an external pair of creatures, the sound turns on and off intermittently.

    When I go to System Preferences -> Sound, and select output, the "Choose a device for sound output", I have:

    Name: External Speakers, Type: Built-in Output. Then occasionally switches to something else, a little too fast to read. Looks like "Something Output (ispk)".

    Every time the sound goes out, the Balance goes to "The selected device has no output controls".

    Weirdly, right now, I've got nothing plugged in, and its switching between Headphones, Internal Speakers, and Built-In whatever. Basically, it looks like the sound output stuff is wigging out. Sound works fine through a USB headset.

    Any idea what the hell is going on?
  2. tpouliot macrumors member

    Aug 29, 2007
    I think I am having the same issue. 2.4GhZ MBP, leopard 5.5. I can not even hear the clicking when I turn up and down the volume.

    Have you fixed it??
  3. tpouliot macrumors member

    Aug 29, 2007
    I talked with Apple Care and they think it is a hardware issue. Since the sound output in my System Preferences only has "headphones" as a choice when this happens, it makes sense that there is no audio coming from the internal speakers.

    Now, I turned my mac off and the next day everything is working fine. This seems to only happen when my mac is VERY VERY warm!
  4. cococarter macrumors newbie

    May 31, 2009

    Hi there,

    Did you manage to resolve the issue?


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