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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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Headphone jack damaged and a piece of logic board ripped off

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Hello guys, i recently received an MBP mid 2012 and after rebooting and installing macOS Catalina, i found out that my in-built speakers wont work since it’s blocked on the optical-out output, i opened the macbook case and inside i saw that a piece of the logicboard is ripped off right where the headphone jack in/out port is, i m not interesting in repairing the jack, i only want to make the in-built audio to work, i searched and found multiple solutions on forums, yet no one made it work. Is there any real solution to disable for good the optical out output or i need to buy a new logicboard?

I updated the photos, enlarged.

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Answer this question I have this problem too

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@popastefan52116 lets see the damage. Post some good pictures of this with your Question. That way we can see what you see Adding images to an existing question

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Hello i did added pictures, isn’t it visible?

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@popastefan52116 just to verify (and to create a reminder for myself :-) your board is a 820-3115?

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Could you select the built in output in System Preferences?

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@thequacker no unfortunately i can’t, only the optical-out

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@popastefan52116 This is what your board looks like

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These are the components that are missing and traces that are severed

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So, this will be a major task on your end. I am sure we can attain a way to come up with a routing of the components to bypass or somewhat repair the traces but.......PITA

R6701 Tip detect

R6700 Sleeve detect

Those could be the issue. Also, the Zener Diodes are listed as critical....

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If the images appear to small, download those to your computer and enlarge with your graphics program.

Okay, we do need a bigger picture. I am wondering if we can connect those detect lines to ground but we need to see more components. Focus on the area of the Red rectangle. Hope you got a multimeter handy ¯\_(ツ)_/¯

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I attached the photos in the orginal post! @oldturkey03

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Popa Stefan will be eternally grateful.
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