There are many computers and terminals out there in the world still that use keyboards and buttons manufactured by Keytronic. These devices use a capacitive surface with a soft foam backing in place of a more complicated switch mechanism. With time these assemblies fail and need to be replaced.

In 2023 there is two or three major vendors selling replacement pads. The most notable of the group is Texelec. Due to the success of their product I have found that availability can at times not be assured. If you are looking to repad a quantity of keyboards the cost can also add up quickly.
For those of you who do not mind the extra effort or sourcing the materials and tools here is a method I developed several years ago which initially I used on my Apple Lisa and subsequently another half dozen machines over the years. While the "feel" of the key might be different, I just don't care. I need working keyboards.

Please note that in the video I list sources for the foam and the Mylar sheets. While availability might be a problem where you live and work, these materials should at least be a good reference for you to find a substitute.

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