My MacBook has stopped showing 'Internal Speakers' in the Sound System Preference. I am not able to listen any audio. How to can this be fixed? - Quora
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MacBook Pro Speakers Not Working [Fixed]
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headphone jack is only emitting right sou… - Apple Community
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MacBook Pro Speakers Not Working [Fixed]
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Sound not working on MacBook? Fix sound issues with these tips
Macbook pro Internal Speakers not available in Audio Output Fix - YouTube
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