On Sun, Apr 29, 2018 at 11:29 PM, Maciej W. Rozycki via cctalk <cctalk@classiccmp.org> wrote: > On Sun, 29 Apr 2018, Paul Koning via cctalk wrote: > >> So that's the answer: graphite powder. I now have a working analyzer >> again. It will be interesting to see if the graphite wears off >> eventually, I suppose it might but that's ok, I can just do it again. > > Many years ago I used graphite obtained from a soft pencil to revive > rubber keyboard pads and from my observation it wore rather quickly, in > particular moving to the surface contact was made against. I wonder if > there is a non-industrial way to make graphite stay in place on rubber.
It's not cheap (and IIRC you have to use the whole lot in one go), but Chemtronics make a kit to repair such keypads. Possibly worth it for a useful instrument though. In the UK you can get it here : https://uk.rs-online.com/web/p/conductive-adhesives/3888673/ and I guess it's also available across the Pond. -tony > > Maciej
