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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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No Sound Out put In MBP A1278

My MBP 13" A1278

having no sound output from speaker if i connect headset hissing sound is coming from headset

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Chosen Solution

Your jack or audio board is damaged. This is not a DIY repairable project. As a work around purchase a USB voice quality headset and microphone. USB audio is separate from analog.

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Hi Thanks for the nice and prompt support, just now i replaced sound jack and found red led glow inside of sound output jack. headset sound is almost ok but out put is not coming from speakers.

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Most Helpful Answer

Check your Sound control panel settings also check your WiFi & Bluetooth settings to see if you have an external speaker set. If these are all correctly set then your only left with the headphone socket as being broken.

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You can try using a toothpick to move the switch contacts inside using a magnifying glass to see what your doing.

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Hi Thanks for the nice and prompt support, just now i replaced sound jack and found red led glow inside of sound output jack. headset sound is almost ok but out put is not coming from speakers.

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Then you have a bad socket switch or if you replaced the socket (desoldered it) then you have sorted something on the logic board.

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Sanjay will be eternally grateful.
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