HT203162: One or more keys on the keyboard do not respond
Learn about One or more keys on the keyboard do not respond
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Dec 19, 2015 6:43 AM in response to Nick A Jonesby georgefromnampa,I had a problem similar to this on my MacBook Air. It was one I purchased on Craigslist. The listing said water damage and I got it fairly cheap. At first, I thought it was the keyboard. As I played with it, most of the keys came back but the control and option key on the left side of the keyboard would always actuate together. When I used a wired external keyboard the keys worked properly so I just figured the keyboard was bad. I actually cut away part of the mylar keyboard seal on the underside of the keyboard thinking I could clean the keys and everything would work again. As it turns out, it wasn't the keyboard. It was the contacts on the ribbon cable going to the main board. I used a Q tip and some alcohol to clean the contacts. I suspect a toothbrush and alcohol might have made the job easier but a Q tip was all I could find at the time. At any rate, this fixed the problem. I had to remove the trackpad to get at the contacts.
