Macbook pro sound defaults to right speaker only

How do I set the sound output to not change to the right speaker only by default? It resets itself every so often.

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My MacBook Pro with Lion 10.7.2, only audio on the headset, and speaker mute. With Windows, the audio works in speaker and headphone jack. What is the problem? What's the solution?

My MacBook Pro with Lion 10.7.2, only audio on the headset, and speaker mute. With Windows, the audio works in speaker and headphone jack. What is the problem? What's the solution?

There is probably a red light on inside your headphone port, indicating that the analog/digital switch in there is stuck in the digital position. Insert a headphone plug and wigle it around, especially in the horizontal plane, as you insert and remove it several times. This will usually unstick the switch and restore normal operation. If it doesn't, the machine will need to be repaired.
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By starting a new thread instead of re-viving an old one,
suggestions would be addressed to you directly...
However you may choose to discuss the matter with
an Apple Store specialist or Genius, and contact one
nearest your location for an appointment date/time
for someone to perform diagnostic testing. If the unit
is covered under AppleCare or a the complementary
warranty at that time, further suggestions for repair
if needed could be discussed &/or arranged.
See all worldwide telephone support numbers
Contact a mobile carrier
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Visit an Apple Retail Store
For Apple authorized Sales, Service, Training, Certification
and Consulting, see these links to locate sources:
If you are located in the US, then this page may help:
https://locate.apple.com/ - (page may default to local)
If you are in another region or country, then this may:
https://locate.apple.com/country
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Whenever I plug anything (speakers, earphones, etc.) into the Audio Output jack, it only plays sound through the right speaker/earphone. The left speaker/earphone hardly has any sound at all.
How should I go about fixing this problem?
It ***** and it's annoying. At first, I thought it was just my earphones but they work perfectly fine with my iPod and other devices.

HI Chris,
my daughter has the ipod touch 4th generation and it started only having sound come out of the right speakers in both of my vehicles. I read also it could be a broken socket causing it. Do you know about this? How does one break a socket and how would I repair that? The person on y*hoo answers said to either send it to apple refurbished unit or replace it. Replace it? Really? It's a 64 GB ipod touch that I won at work with reward points which is the only reason I could afford it. Looking for better solution like your's above but I'm worried I will have to send it in. I was looking on my iphone 4 and noticed the volume balance was under Settings>General>Accessibility so I guess it's different on an ipod touch?

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You have to take the computer to the Apple store.
http://support.apple.com/kb/HT4790
Best.

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Hi..
I have a imac mid 2011 and the sound from the right speaker is very quiet.. and ALL settings are right.. have anyone had something simular..?

Yes... all the settings... still same.. its just that the tweeter works not the bass on right side...i guess the speaker is broken.. i orderd a new speaker to try with..

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Message was edited by: amir hamza

Adjusting the Audio MIDI solved my problem thanks! What exactly caused the problem for me is unknown. Over the weekend, I did use iMovie, DivX, and audio spliter and I did connect to a pretty sophisticated audio system. One of those things surely was the gremlin.

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Macbook pro sound defaults to right speaker only

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