some keys doesn't work after battery replacement

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MacBook Pro 15インチ Retina Display Mid 2012

2.3GHz, 2.6GHz, or 2.7GHzクアッドコア Intel Core i7 プロセッサ (Turbo Boost 最大3.7GHz) 6MB 共有L3 キャッシュ付き。

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Maher @mahrmm

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投稿日: 2021年9月3日

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some keys doesn't work after battery replacement

Hello folks,

Just replaced the battery for my 15” MacBook Pro (mid-2012). So far, the new battery is working as expected. However, some of the keyboard keys (Space, Delete, Cap lock, left arrow, down arrow) are not working!

I tried the following:

Reset SMC
Reset PRAM
Disconnect and reconnect the keyboard cable
Checked system settings

None of these helped.

Any suggestion? Please help!

Thanks in advance

Here is how the keyboard cable looks like:

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DanJ @danj 評価: 499.5千 Self employed contract worker 35 342 977 · Answer 1 · 2021-09-04T05:40:07-07:00

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DanJ @danj

評価: 499.5千

Self employed contract worker

35

342

977

投稿日: 2021年9月4日

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I would inspect the keyboard cable and the connection to the logic board.

Disconnect the battery and carefully slide out the ribbon cable from the socket use cotton swab (Q-Tip) with some reagent grade Isopropyl alcohol to wipe the contact surface, if it looks damaged you may need a new keyboard.

Refer to Step 24 & 25 here: MacBook Pro 15インチ Retina Display Mid 2012 のロジックボードの交換

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Hi Dan,

Thanks for your feedback.

I tried to clean it as you suggested, with no luck. It does not look damaged to me.

What are the chances that this issue is a keyboard issue and not something else (since I didn’t remove the keyboard cable while replacing the battery and the face only a handful of keys are not working)? Changing the keyboard looks extremely painful task ?

Thanks again

Maher さんによる2021年9月4日

@mahrmm - Sorry, sounds like some of the solvent dripped into the keyboard ;-{

DanJ さんによる2021年9月5日

thanks, Dan for your reply. the keyboard price is not much, but i dont think i have the guts to replace it myself.

Maher さんによる2021年9月7日

@mahrmm - One option is just replace the case assembly MacBook Pro 15" Retina (Mid 2012-Early 2013) Upper Case Assembly

DanJ さんによる2021年9月7日

Thanks Dan, I dont think my mbp worth investing more on it in term of money and time. :)

Maher さんによる2021年9月8日

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MacBook Pro 15インチ Retina Display Mid 2012

some keys doesn't work after battery replacement

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