So I took apart my wife's laptop to try and fix the keyboard. After one time cleaning it with a damp cloth, I broke it and since then, there are 5 keys that don't work. I was hopefully I could take it apart and figure something out. I don't understand how these keys work. There is a tint rubber bubble type membrane that makes the click bit how does that make a switch? I am afraid to cut into the back since I am guessing there are circuit traces in there.

#asknostr Any ideas or info on hiw these work would be awesome. Thanks.

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Maybe check here: https://www.ifixit.com/

This has a great guide on how to get it out. This may have been helpful but I already figured that part out. Good to know though. Great resource. Thanks.

I think it needs a hammer 🔨

It may come to that.

It's called rubber dome switch. There are two types. One just applies pressure and there are two foils with printed traces underneath, separated by isolation with holes just under the key. When you press it, it makes top and bottom layer connect. Second type (and by photo it's your case) has the rubber bubble conductive/has conductive spot inside. When you press it it against exposed traces under it, it connects and it reads a press. It's really widespread solution, but usually hidden.

If there is oxide build up on traces due to the water damage creating isolating layer, try rubbing alcohol and somewhat gentle scrubbing it with cotton sticks.

Good luck!