HT2494 2012 MacBook Pro - no sound from internal speakers, red light in headphone port

Mid 2012 MacBook Pro 15".
I normally use external speakers plugged into headphone jack.
The other day I unplugged the external speakers and when I re-booted my Mac, I got the start up sound
but I have no sound coming from my internal speakers.  In System preferences sound output I see no entry for internal speakers.
I also notice a red light shining in the headphone jack port.  I see on youtube that this problem is rather widespread.
Some suggest using a paper clip to try to turn the light out, but I am not doing that.
I have Lion installed, tried using the MIDI-app to reconfigure the speakers, but I only get sound if the headphones are plugged in.
Is this a software or hardware problem?
I have a genius bar appointment today at my local Apple retail store, and my mac is still on warranty but this
is troubling that you spend $2300 for a laptop and after a bit of regular use the internal speakers no longer work.
Any ideas?
thanks.

I agree Nick - it is a concern especially on such a basic function (sound) - Linc is right, the issue is microswitch, sounds like a bad design or a huge batch of sub quality switches, checking the forums this issue is common on MBP's.
Judging by the date and lack of further activity I assume you managed to get yours fixed at the genius bar ?
I finally fixed mine myself but posting reply for others who have same issue as this - however buyer beware folks, try this at your own risk !!!
The fix won't be liked by Apple Support, the genius bar, or the repair shops but it worked for me after over 12 months of using headphones / external speakers - WHAT A PIA !
Method -
Held  Macbookpro on it's side with screen open and headphone/ audio  port facing toward ground.
Took WD40 can with straw dispenser and placed straw inside audio port - sprayed 3 or 4 one second burst of WD40 into port.
Held MBP that way for 30 seconds giving MBP a shake to drain WD40 out
(I performed this whole excercise outside where the WD40 could drain out without an issue ;-)
I then took an old set of headphones and re-inserted / removed them from the audio port approx 20 times in and out with music playing on the MBP -  intially when inserted music will only come from headphones then eventually MBP internal speakers start working !
I've tried everything else including the cocktail stick and bent pin inserted inside the port to try and free micro switch - nothing worked it was stuck fast.
As stated, can't endorse this for anybody else - you do so at your own risk - just stating this is what I did to get mine working again !

Similar Messages

  • Macbook Pro no sound from internal speakers or headphones

    I have a macbook pro (mavericks). There is no audio coming from the internal speakers and when headphones are plugged in there is still no sound. There is no red light coming from the headphone port either. Any advice?

    Try plugging the headphones in and out 10-12times, while toggling the volume and mute buttons.
    Have you tried cutting the end off a cotton swab and GENTLTLY swabbing the the headphone swabbing the port 9;00 clock to 3:00 clock, there is a micorswitch that some times gets "hung up" and this can free up the witch.
    Also you can try going to to applications/utilities/ Audio MIDI Set up. app and see if you can select built in there.
    To get more aggressive you can try these options:
    Close all windows and quit all applications.
    Click "Go" menu in the Finder menubar.
    Select Computer, then Macintosh HD > Library > Preferences
    Open "Audio" folder.
    Right click these two files and select "Move to Trash".
    com.apple.audio.DevicesSettings.plist
    com.apple.audio.SystemSettings.plist
    Close the window. Restart the computer
      Go to Applications/Utilities/Audio MIDI Setup/Built-In Output/Output and in Format change from the default 2ch-24bit integer to any other format (say, 2ch-32bit float). This should activate the headphone jack.  I moved the format back to the original 2ch-24 integer setting and the headphones continued working.  So it seems that (for some reason) the original default setting does not recognize a headphone being inserted, but after performing this "resetting" it seems to come to its senses and behave properly from then on
    if these do help your issues, please post back, there may be other options.
    It is best to start a new post, rather adding on to an already existsting, as you will get more people looking at it, and thus offering more advice/sugestions.

  • Macbook Pro - No Sound from internal speakers + No red light

      Okay so I know this a very famous issue (I've seen over a hundred threads with people having the same problem) but the problem I'm having is something I haven't seen anywhere else. I recently tried  to fix my headphone jack on my Macbook pro early 2008 model when it DID have a red light emanating from it but when I finally managed to turn it off with a little wiggle from my paperclip the sound still didn't turn back on. In my system prefs my sound output still displays "Digital Out" and no other option for internal speakers. I know my speakers are fine because I can hear the startup chime. Also, I had a broken piece from my headphones stuck inside the jack a few years back and I retrieved it in....let's just say, not the most professional way to do it (I completely destroyed my headphone jack while attempting to retrieve the broken piece and now the hole is too wide for any headphones), though afterwards the internal speakers still worked for a while, it was just the headphone jack that was messed up. 
    Basically what I'm trying to say is: is there a way to enable my internal speakers without using any hardware methods? Because I tried the paperclip fix and the red light did turn off, but still no audio + sound prefs still shows 'digital out'. I really don't care much for the headphones jack anymore because I'll just override it with some USB headphones.
    Thanks in advance
    Some Images:
       'Only displays Digital Out'
    'My jacked up headphone jack (no pun intended, although very relevant)'

    I agree Nick - it is a concern especially on such a basic function (sound) - Linc is right, the issue is microswitch, sounds like a bad design or a huge batch of sub quality switches, checking the forums this issue is common on MBP's.
    Judging by the date and lack of further activity I assume you managed to get yours fixed at the genius bar ?
    I finally fixed mine myself but posting reply for others who have same issue as this - however buyer beware folks, try this at your own risk !!!
    The fix won't be liked by Apple Support, the genius bar, or the repair shops but it worked for me after over 12 months of using headphones / external speakers - WHAT A PIA !
    Method -
    Held  Macbookpro on it's side with screen open and headphone/ audio  port facing toward ground.
    Took WD40 can with straw dispenser and placed straw inside audio port - sprayed 3 or 4 one second burst of WD40 into port.
    Held MBP that way for 30 seconds giving MBP a shake to drain WD40 out
    (I performed this whole excercise outside where the WD40 could drain out without an issue ;-)
    I then took an old set of headphones and re-inserted / removed them from the audio port approx 20 times in and out with music playing on the MBP -  intially when inserted music will only come from headphones then eventually MBP internal speakers start working !
    I've tried everything else including the cocktail stick and bent pin inserted inside the port to try and free micro switch - nothing worked it was stuck fast.
    As stated, can't endorse this for anybody else - you do so at your own risk - just stating this is what I did to get mine working again !

  • Very poor sound from internal speakers, very good on headphones.

    Hi,
    I hope you can give some advice.
    New to all this so apologies if protocols are broken etc
    New 20" imac, running Leopard.
    very thin, tinny sound from internal speakers (similar to hearing someone's else's walkman
    on the train). when I plug headphones in its great no probs.
    Advice please! I don't want to send it back I'm halfway through my assignment.
    Hadders

    I just realized I've never heard the internal speakers on my new iMac, I have always used good 2.1 speakers since I got my eMac years ago and the internals really sucked.
    I was just curious, have you heard anybody elses built in iMac speakers and did they sound better than yours or the same? Maybe at the Apple Store?
    I don't know, I just didn't know if they really improved them. Maybe other iMac users can chime in on internal speaker quality. The only reason I said all this was because you mentioned that headphones sound great, which is the same port that a set of external speakers would go.
    Sorry to hear you had to send it back for that. Here's hoping you didn't have to send it in for what the speakers really do sound like.

  • MacBook Pro: No Audio from Internal Speakers - Solution

    Issue: (MacBook Pro late 2010) Absolutely no audio to internal speakers after OSX has booted up.
    Digital Out is the only available output device shown within System Settings
    Analog headphones work
    Digital Out works
    Bootup "BONG" works (and is of course now perma loud after PRAM reset... uggh)
    Things I have tried from least drastic to greatest in the following order:
    sudo killall coreaudiod
    Clear PRAM
    Using Deploy Studio (first performing DiskUtility format as well):
    re-image MacBook with a the same original OSX Lion image it has been working with for the past 3 months
    re-image MacBook with previous Snow Leopard image (obviously used to work)
    Not using Deploy Studio (but first performing DiskUtility format, using original supported installation media: DVD, Apple Store):
    Installed Snow Leopard (no audio), then upgraded to Lion through Apple Store (still no audio)
    Installed Snow Leopard using installation DVD provided with MacBook Pro (< waste of time as the above step didn't work either, but including here for completeness)Note: Even the "Welcome to Mac" intro movie is silent, audio controls are crossed out
    Gentoo Live DVD _works_ (after enabling Front Speakers using alsamixer other wise it was also muted and no audio would work except through head phones)
    Well holly $%#$%,  %^#&^. After performing step 5, and enabling Front Speakers using alsamixer, I now have audio in OSX Lion
    I believe this happened after I used the Mini Stereo jack for Head Phone use.
    How in the ______ did this happen? And why did it take a third party software to _somehow_ enable audio to the internal speaker _after_ OSX Lion completely booted?????
    Note to all: You can probably use a Ubuntu Live CD to perform step 5. Or any live cd that loads up Intel Audio drivers.
    Jason Miller

    I appreciate your response. I still have concerns:
    The red-lite is off when my issue is happening.
    The red-lite is on when my issue is happening.
    It was not consistent. My concern is the Macintosh operating system not detecting the change. My other concern is it can _not_ be only a hardware switching issue, as Alsamixer, a software program, can make the switch toggle between off or on. If it was a hardware-only issue, Alsamixer would be a fail. And, if it is actually a hardware-only issue triggering a software 1 or 0 switch somewhere:
    My final concern is 'where is this setting being stored' as clearning PRAM and reinstalling entire operating system after opertating system (Leopard to Lion and back to Leopard) after a disk wipe has no effect.
    I guess it sounds to me, that OSX tries to be too user-friendly by not allowing peeps to change those options themselves. Is there a dscl command switch I can use to manually override such an effect? (Just in case I don't happen to have anything to stick into the mini-jack port)
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  • No sound from internal speakers, red glowing light in headphone jack

    Okay. Have seen a few posts on this topic, but scattered symptoms, resolutions and ideas. Here is my timeline and plan:
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    I have had the same syptoms as the above people in my PowerBook and was hating life without sound. i got to thinking about what earlier people had posted and concluded it could not be a software problem, that it had to be a hardware problem. I thought, maybe the headphone jack was just dirty, you know, plugging headphones/speakers in and out of the computer many times, it could have just gotten dirty. If I just clean it with rubbing alcohol, maybe that will do the trick. It did! I have been going two days and am doing great!
    THE BOTTOMLINE!
    Clean the headphone jack out! I used a q-tip and rubbing alcohol. (I have found that making my own q-tip with a toothpick and a small amount of cotton works better because it is thinner than the stick for a q-tip. Just twist the cotton to the edge of the toothpick.)
    For all you people out there who try this and it works for you post for other people so they can be more confident that it does work.

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  • Macbook pro doesn't recognize internal speakers

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    In addition to what dominc23 suggests, you may try jiggling a toothpick or cocktail stirrer in order to trip the internal switch.  If all fails, the Apple store genius bar is you last resort.
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    Hi,
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    ** Say thanks by clicking the "Thumb up" icon which is on the left. **
    ** Make it easier for other people to find solutions, by marking my answer with "Accept as Solution" if it solves your issue. **

  • No sound from internal speakers or headphone jack

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    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
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  • No sound from internal speakers in HP Mini

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