Tony Duell wrote:
A couple more suggestions. Chemtronics sell (sold?) a
rubber keyboard
repair kit. It was a 2-pack thing that you mixed and then put a bit on
the conductive rubber pad. The problem was that it's expensive, and once
mixed you have to use the whole lot (enough for about 100 switches I
think).
I found, while repairing mid-80s synthesizers, that roughening the
rubber bit with sandpaper then painting on silver-loaded paint (from
Halfords, the stuff they have for fixing heated rear windscreens) worked
just great.
Gordon.