Headphone jack distorted, but internal speakers fine?

I haven't even had it a day and I've already run into problems on my Macbook 2.2GHz C2D. It seems the internal speakers work just fine for music, but when I plug in headphones or earbuds into the output jack the vocals and anything that's not panned hard left/right basically goes away. And when I plug in a stereo system to the output jack it gives me a loud low frequency hum. This happens both in Leopard and in XP (I have both installed on the macbook). No red light in the output jack, and everything else works just fine (although I recently noticed I no longer get an XP boot screen... Kind of odd, but it may have to do with the fact that I have so much RAM installed).
What's weird is, if I go into the system sound preferences either in XP or Leopard and mess with the left/center/right balance, all the way left or right the vocals come back in (although it's still in both ears, which it shouldn't be), but when you center the balance you lose everything that is centered in the mix (mainly, the vocals and any main instrument that's not panned hard left/right).
I tried updating my drivers, using different headphones/earbuds, wiggling the jack around, different songs and players, even went so far as to reformat and reinstall Leopard. Still messed up :-[
The only aftermarket modifications I've made has been an upgrade from 1GB to 4GB RAM and a boot camp install of XP. Unfortunately, as I'm going to be using this computer mainly for Pro Tools music production and editing, I really need the headphone jack to be at 100%!
Any suggestions? I'm thinking it's hardware related, as it happens both in XP and Leopard with all the latest drivers installed.

Try switching back to your previous ram and see if there is any difference. It may be hardware as you say, and a quick trip to your Apple tech should verify that. I work with audio too ...I like to use the Griffin iMic for both sound in and out - it's a USB devise that'll give you a better signal and keep your line in/out ports free so you're not jarring them when you have the small 1/8th adapters/cables plugged in.
http://www.griffintechnology.com/products/imic

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Headphone Jack Glowing Red, Internal Speakers Not Working...

Hey, I have a 2.0GHz White MacBook (almost a week old), and I just recently came across this problem (this morning, actually). I usually have my MacBook connected to some external speakers through the headphone jack, the internal speakers are pretty terrible. Anyway, last night I left the computer on playing music as I fell asleep, this morning I woke up and the computer must have some how come unplugged from the AC power, as it was dead. I plugged it back in and everything was fine (I mean, it had to charge up, and the battery 'health' in iStat Pro was down to 93%, also not sure what this means... But everything else was fine). Then, I unplugged my external speakers and the jack was glowing red, I believe there's an LED inside. The internal speakers would then not work.
I did a quick Google search and discovered that this problem had been experienced on MacBook Pros. Someone recommended plugging in a set of headphones, I did so and then unplugged them and the internal speakers worked for a moment. I plugged in the external speakers again, and they worked (and work) fine. The problem is with the internals, they don't work, and plugging in my headphones again has not solved the problem, and the light is still on when the jack is not occupied.
Any ideas?
[edit] As of this writing, they are currently working, after plugging in the headphones again and unplugging them, however, the light still blinks when I do this, and there is a bit of a hesitation between the headphone being unplugged and the internal speakers kicking in... (longer than normal, I know there was always a slight delay, but this is a few seconds of blinking light and no sound).

you can fix this by "cleaning" the audio jack. the computer thinks that a digital output is connected. if you go to sound under system preferences, and it says digital output rather than internal speakers, then this is the problem.
I used a tightly rolled up piece of toilet paper to clean the jack. I twisted it up, stuck it in the jack, and then moved it around for a while. the red light went off and my internal speakers started working. someone else used a toothpick.
also, before i fixed this, i couldn't turn the volume up or down (unless i was using headphones) and the volume level screen that shows up on the screen had a circle with a line thru it...like the no smoking signs, but small and just under the volume bars.
http://discussions.apple.com/thread.jspa?messageID=3700681&#3700681
good luck

Broken cable in phono jack - override to internal speakers?

I recently broke my headphones cable off in the phono jack on my Powerbook G4, and now my computer perpetually thinks that I have headphones plugged in because of the little piece of cable that is lodged in the jack. I use a USB peripheral for headphone use now (I've given up on the Sisyphean task of trying to dislodge the piece), but I'd still like to be able to use my internal speakers. Headphones appears as the only output option in the Sound control panel, and I'm curious if there's a way to trick my computer into switching back to internal speakers.

Hey TR,
21Jan...
Can you stick a powered speaker on that jack and fix it so it doesn't wiggle much until you can get it fixed?
22 Jan...
The only fixes I have found for this are for Linux.
One can risk a registry fix, though I've not found a sure way to do it. The fix depends on knowing your sound card (I do not), and knowing the exact entry fix (I might, but I won't risk your system).
My sage advice is to get it fixed and be done with it.
It is my pleasure to assist.
Say “Thanks!” by clicking the Kudos Star to show your appreciation for the help.
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Kind Regards,
Dragon-Fur

The sound of the video's on my iPhone are distorted but it works fine with Voice Memo's.

Hi, I was just wondering if anyone has had this problem and is able to help me with it - When I do a video recording on my IPhone 4S and play it back, the sound is low and distorted. I have done several voice recordings in 'Voice Memo's' to test the microphone and speaker but they both seem to be functioning properly as it worked perfectly. The sound also works perfectly with everything else including music, ringtones, texts etc. - If anyone has had this problem and/or knows how to solve it, it would help greatly. Thanks Very Much.

You may have debris in your headphone jack blocking the sensor. Try blowing hard on the jack, and inserting/removing your headphones quickly multiple times to clear it.

Can I override the headphone jack to play through speakers?

Macbook pro 15" early 2011, running mavericks 10.9.5
Some cabling broke off in the headphone jack and I can't play sound through my speakers since it's still identifying headphones. I read that this is a mechanical switch and can't be fixed by software, but that was like a year ago.
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MusicByLaurie wrote:
how can I pan the left side to play through both speakers (in mono)?
you can not, you'll need to create a mono version of the left channel:
http://www.bulletsandbones.com/GB/GBFAQ.html#stereotomono
(Let the page FULLY load. The link to your answer is at the top of your screen)

Headphone Jack doesn't mute speakers? Twist

Hi,
My twists headphone jack, when I plug in a pair of headphones, plays through both the headphones and the speakers! Anyone have any ideas to fix?
K.
Solved!
Go to Solution.

Hey there Kyleosipad,
I was able to find this nifty Knowledgebase article that gave some insight on how to fix your issue. It looks like an audio setting needs to be adusted:
1. Go to the Control Panel.
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I hope this helps.
Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution".! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Headphones make static noise only when plugged in but internal speakers work fine?

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Since you know it isn't the headphones but the computer the computer needs to be looked at by an Apple authorized repair center or a Mac Genius.

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Thanks for the suggestion, it's a troubleshooting trick that often works but not in this case.
I DO like the Zeppelin. Had to send it back to B&W once for the dreaded power-source fix but they did it on their dime so it was no big deal. Also have the mini for our daughter's room and they both serve their purpose well. They can't really replace a "Stereo" but they sound pretty good and are super sexy.

Exchange 2010: New Mailboxes cannot receive external email, but internal works fine. Existing Mailboxes are working properly.

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On Wed, 30 May 2012 02:01:19 +0000, Relion Support Inc wrote:
>
>
>Hello,
>
>
>
>I can't seem to figure out what the problem is, but my new mailboxes cannot receive external email. The sender receives an NDR stating the following:
>
>The error that the other server returned was: 550 550 No such user - psmtp (state 13).
>
>
>
>Internally, the affected mailboxes can send and receive mail, and the mailboxes have no trouble sending mail out of the organization. I do not see an anti-spam solution installed on the exchange server, and I have confirmed that DNS resolved to the WAN
IP of this server.
>
>
>
>Can anyone help me? The message tracker didn't appear to have recorded the NDR's that it sent, but it's possible I didn't view the logs correctly.
Is your Exchange server exposed to the Internet or do you have some
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Rich Matheisen
MCSE+I, Exchange MVP
--- Rich Matheisen MCSE+I, Exchange MVP

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Great, you fixed it!
It looks like the msi gaming control center should be bundled with WMIHookBtnFn, but it's not. This "utility" by now it's almost useless, only the Wifi and camera switch worked.
A detailed explanation of what I did here if someone has the same issue:
-> I looked in msi support-downloads http://www.msi.com/support, selected my and went to "Exclusive downloads"
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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.
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I have Lion installed, tried using the MIDI-app to reconfigure the speakers, but I only get sound if the headphones are plugged in.
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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 !

Headphone jack distorted, but internal speakers fine?

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