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  1. #1
    Macbook Pro Red Light/No audio Problem solved.
    I noticed there were a number of people who were having problems with the digital audio being stuck on which didn't allow the main computer speakers to work.

    I figured out how to fix this, or, it at least worked for me.

    first, plug in a USB device (iPod, hard drive, etc..) (I used an iPod)
    Next plug headphones into the headphone slot, then uplug them. This should turn off the optical light.

    Like i said this did work for me, I am making no promises but I had tried everything, and this did it.

  2. #2

    Member Since
    Jan 27, 2009
    Yeah this works. You do it in this order though..

    Plugin external hard-drive/flash disk
    Plugin headphone
    Eject drive/disk/usb device
    Unplug headphone

    it works!

  3. #3

    Member Since
    Oct 31, 2010
    same problem, different solution
    I tried the solution above, but it did not work for me. I ended up plugging in headphones and then slowly pulling them out as I repeatedly hit the volume adjust button on my keyboard: the volume finally became responsive... what a weird problem. I am surprised that Apple has not noticed this little snafu...

  4. #4

    Member Since
    May 14, 2011
    Same problem
    though none of these solutions work...any other suggestions?
    Thank you

  5. #5

    thurstmw's Avatar
    Member Since
    Sep 29, 2010
    13inch 2.3 i5 MBP 64gb SSD 320gb HD 8gb 1333
    Quote Originally Posted by bettyg View Post
    though none of these solutions work...any other suggestions?
    Thank you
    Wow this is an old thread. Take a toothpick or matchstick and shove it in their and movie it around. There is a switch on the top of the jack which needs to be hit.

    Yes that is a grizzlycorn

  6. #6

    Member Since
    Aug 11, 2011
    FIXED - Hardware Fix (requires soldering skillz)
    Toothpick trick did not work for me, or anything similar. So, I took it apart to get a look at the logic bord. I reverse-engineered the connections I could access from the bottom of the PCB under the audio jack. While doing so, I found that you can jump two connections (one is sleeve ground and the other I believe is a connection from the switch inside the jack. After doing so, the headphone jack will not work as an audio output for either analog or optical, but the internal speakers will work fine. This is b/c the switch is basically bypassed, the macbook will never know whether there is a headphone plugged in to the jack or not. This fix is fine for me, especially since I had no other option b/c I'm out of warranty and I'm not spending $400 on a new logic board haha.

    BTW, I'm a Ph.D. Computer Engineering student, I didn't just do this all willy-nilly out of the blue, haha. You do need a decent sodlering iron to do this and you must make sure you have a very small gauge wire (insulated). This fix can always be undone... if you need to for some reason. Below is an imgur link to a couple photos I took of the area and connections to jump.

    NOTE: This is one a late 2008, a1278 MacBook unibody. The macbook pros may be slightly different, but you can figure it out with a connectivity meter and some fiddling maybe. They also could be exactly the same, I don't know.

    macbook audio jack fix - Imgur

  7. #7

    Member Since
    Dec 30, 2010

    Same problem. After listening via earbuds (that came with my IPhone), I yanked them out of the Macbook and the internal speakers stopped working.


    Plug them back in.
    Listen to something (Youtube whatever)
    Pull them out REALLY SLOWLY.

    This worked the first time.

    Hope that helps...


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