Making some progress with the 16K Microbee

[CheshireNoir]

...I desoldered all the dead keys, disassembled them and resoldered and it completely works!......

Someone hates to be the bearer of bad news but unless you've got the original release metal to metal contact keyswitches, serviced conductive rubber switches have a nasty habit of reverting to high resistance.

I assumed that until I got a replacement, that I'd have to service them every few years.
:-)
Isn't that half the fun of these old systems?

Chesh