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I broke my J key cap when cleaning. The little clip on the back of the key fell ok and now the key is loose. Anything I can do (ie ordering a new key cap) or will I have to take the laptop in?

I think it came loose while you were just typing on it. If so, it is covered by Apple by this Service program: https://www.apple.com/support/keyboard-s… If you really are sure you did knock it off, then it will probably require an upper case replacement as these new keyboard are almost impossible to work on. Here’s the part you will need: MacBook Pro 13" Retina (Touch Bar, Late 2016-2017) Upper Case

you may be able to push down on the key until it “clicks” on regular keyboard but because the new MacBook pros her those low keyboards with a different mechanism it might be different. you can go to https://support.apple.com/mac to see if people have the same problem.

You can buy replacement key caps and perhaps the butterfly levers underneath if you can take them off. But if there is anything damaged on the keyboard frame or support, that is going to be an expensive repair.

thank you for helping me