HP-29C Key has no 'click'?

[teenix]

There should be notes available for opening the keypad for repair if you do a Forum search.

Here's one that may help.

https://www.hpmuseum.org/forum/thread-17...#pid148751

The keyboard is help together with plastic posts that have had their ends meted to form a mushroom shape at the end. You have to cut the tops of these off and after a repair, the stake tops will have to be glued to the circuit board after reassembly.

If the keyboard has metallic domes, the one under the [-] key may have cracked or has lost its ability to snap back into shape after being pressed and released.

The keyboard might also have the same metallic key strips like the Classics. In this case, the dome under the [-] key may suffer the same problem with fatigue cracking or tensile loss. Sometimes the keys can be pressed really hard and the domes deform and crease also causing loss of tensile strength.

These strips can be repaired but you need a donor.

I documented a repair method in my Classic Notes

cheers

Tony