Question about Apple MacBook 13"White /2.0Ghz Intel Core2 Duo White/2GB (2x1gb)/80GB/SuperDrive (Z0DT) Mac Notebook

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Built-in speaker in Mac doesn't work (red light!)

I plugged a headphone in my Mac but when I unplugged it, the sound stopped and a red light shine from the jack.What should I do?

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I took a safety pin and put it in the notch inside the headphone jack input. notch is located at 12 o'clock about 1/8th inch in, (this is an important step, other steps are no good until red light is off) the red light went off (Be patient this step may take time) still no sound, I then went to Audio MIDI setup (Should be located in Applications/Utilities), go to Audio in menu bar (at very top of computer screen) and selected 'open Aggregate Device Editor,' clicked on the + to add a device I then had a few options show up in the lower [Structure] portion I clicked on all the 'Use' boxes and the built-in output bubble selected done. I then Selected Configure Speakers in Audio MIDI setup and I can test my left and right speakers individually, they put out a fuzzy test sound, pressed done when finished. They still didn't work so I set Default out put to the Aggregate Device I created, then turned on Itunes and it was working fine I just could not control the volume from the F3, F4, & F5 buttons so I went to sound in system preferences and made sure the built-in Output option was selected. I was then able to control the volume. The red light in headphone jack input may come back on if anything is inserted inside, just mess around with the notches inside till it goes off. Hope it works as well as it did for me. Good luck and please feel free to quote me and share this solution with others.

Posted on Jan 22, 2009

  • gustavo_fors
    gustavo_fors Jan 19, 2013

    Hi, I'm having this problem since I installed Windows on my macbook via Bootcamp. The red light only shows on Windows. When I'm on the Mac OS the red light doesnt lit up but the speakers doesn't work, only external sources. On Windows, my thunderbolt display sound works but not the headphones. Do you have any clue what this may be?

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I had this problem once too, first off, plug the headphones back in. Now gently remove it, if this does not work, go to settings>sound>output>built in speakers

Posted on Nov 22, 2008

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This is a known problem with some Macs. The port is used for both headphones and for a video+audio plug. The Mac thinks it's detecting the wrong one.
Some discussion of this problem here: http://discussions.apple.com/thread.jspa?threadID=1011421&tstart=0
If you're under warranty, it's worth taking it in for repair. If not, some people have fixed the problem by plugging in a different set of headphones, or by gently(!) probing inside the port with a toothpick to trip the sensor.

Posted on Nov 21, 2008

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Solution #2 worked for me with the toothpick! I had to probe a bit to the right, more at 3:00 for me than 12:00- still grateful for all of your answers!

Posted on Dec 12, 2009

  • erica784 Dec 22, 2010

    Using a paperclip end worked, the magic spot was at 9:00 for me. Once I had hit the right spot the volume can on immediately. It took about 5 careful attempts. Thank you!

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I had a problem buit in speakers on my unibody macbook .. ie after the dual boot windows xp in boot camp built in speaker sound is not detected, such as noise, when booting in OS X the speaker's voice sounded very clear, what I should do. please

Posted on Mar 13, 2010

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Guys- I have almost the same issue. My left build in speaker just made a cracking noise while I was playing around and recording my voice on Garageband. Anyone know how to fix it? I didn't use any jack to record my voice or anything. :(

Posted on Oct 22, 2011

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