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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:

  1. Reset SMC
  2. Reset PRAM
  3. Disconnect and reconnect the keyboard cable
  4. 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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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" Retina Display Mid 2012 Logic Board Replacement

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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

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

의

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

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

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