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Bottom row of the keyboard is not working

Was trying to replace my speakers, but when I turn it back on, only the bottom row is not working. Only "Left Command + ZXCVBNM" are not working. Anyone know what's causing it? Which part did I break?

Thank you all!!!

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Jump back to Step 23 in the MacBook Pro 15" Retina Display Mid 2014 Speakers Replacement guide. Make sure the cable is squarely seated and the latch is properly set. Often I see the cable at an angle or not fully inserted, or not compressed by the latch.

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Yes I did that couple of times... is there any other issue that might caused it in your experience? Was working before I opened it.

@timtwo - Could you have damaged the cable?

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