Early 2011 model, A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor.

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A couple of keys are not working

Hello, a couple of keys on my macbook pro are not working. I spill water on macbook and after this i changed the keyboard with a second one. This "new" keyboard worked perfectly before. Can this problem may be caused because of the keyboard jack, i think it's a little bit dirty?

The keys that are not working are 7 u j m ; '

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It's possible. It's also possible it could be a keyboard controller chip. Try any USB keyboard see if the same keys do not work. If they work ok carefully clean just the end of the ribbon cable (use a clean pencil eraser as an abrasive). Ensure you get the cable fully and squarely inserted into the connector and remember to unlock/lock the Cam.

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