SOL-20 keyboard question

[Jos Dreesen]

>
>    They look like they should be mylar coated or silvered Kapton discs 
> with a foam backing.  The foam is mostly decayed, and there's 
> virtually no silvering left on any of the discs.  They few that do 
> have only the slightest fragments.  I assume this is supposed to be 
> conductive, because pressing a disc against the PCB pads doesn't 
> trigger a key, while touching the PCB with my finger does.
>
>    Can these be rebuilt, or are replacement switches available?
>
They are capacitive, not conductive. i.e. you should not short the PCB 
pads.  They can be rebuilt, either by homemade pads or
, if you can find them, replacement pads. Google for sol20 keyboard.

							Jos Dreesen