Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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My internal speaker doesn't work

dear team

i have a problem that broken jack inside my out put 3.5 sound and i couldn’t take it out and the problem now even the internal speaker not working i try every thing rest SMC update software every thing and still showing block its working only in booting the OS

but after that is showing no input

regards

Update (01/25/2019)

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1 Answer

It sounds (pun intended) like the operating system continues to think that there’s something plugged into the 3.5mm jack, so it turns off the speakers of your MacBook Pro. The cheap solution is to try to get the plug out of the port. If you do this, definitely deplete the battery/unplug it. Also, don’t keep it charger plugged in. I’d also leave the laptop sitting there for some time to make sure that all power is depleted from the system.

The expensive/safe solution, unfortunately, is to buy a new logic board, depending on your model.

2.5 GHz —> MacBook Pro 13" Unibody (Mid 2012) 2.5 GHz Logic Board

2.9 GHz —> MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board

MacBook Pro 13" Unibody (Mid 2012) 2.5 GHz Logic Board Image

Product

MacBook Pro 13" Unibody (Mid 2012) 2.5 GHz Logic Board

$299.99

MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board Image

Product

MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board

$399.99

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