I met exactly the same problem mentioned in
Keys F1,1,Q,A,Z,Backspace,F12 don't work
and
Keys F1,1,Q,A,Z,Backspace,F12 don't work - Apple Community.
It seems that the problem is caused by a broken cable. However, I have no idea which cable should I replace since the model used in the above blog is different from mine.
I am using a MacBook pro in the early 2015 (A1502) model.
Bu iyi bir soru mu?
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I would connect an external USB keyboard to double check things. Often the keyboard it’s self is damaged and as the cable connection is part of it you have little choice than to replace it. But sometimes the issue is within the Trackpad cable as it tends to get damaged MacBook Pro 13" Trackpad Flex Cable. Sadly they are hard to come by new as it was a common issue when the battery should press on it. Now you are likely wondering why the trackpad cable would be involved here the issue is the routing of the signal does not go directly to the logic board from the keyboard instead it goes to the trackpad and then back to the logic board as the UART chip is within it. Here’s the guide MacBook Pro 13" Retina Display Early 2015 Trackpad Replacement
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The external keyboard works just fine.
Hi, I just replaced the cable you mentioned and also the battery, before that, I also replaced the keyboard. However, the keys I mentioned are still not working. I don't know what to do now.
@haggittli - I think you’ll need to find someone local with deeper skills.
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Both of your links are for the older MacBooks not the retina system you have. While there are some similarities over time this change in the design so we really can’t depend on these as a reference.
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