26 Dec
2008
26 Dec
'08
9:56 p.m.
dwight elvey wrote:
Hi
It might be that one could restore it by removing a little of
the surface. One could try a small piece of 220 or finer sandpaper
and just remove a little of the surface that has been oxidized.
Dwight
I had tried abrading the surface a little bit with that thought in mind,
but it did not help at all. I also measured the resistance of the black
disc using the meter probes touching it directly (with a little force),
and the resistance was high as expected. (Somebody had suggested that
the disc was conductive, but after that test I doubt it.)
I think the best idea at the moment is the conductive ink used to fix
circuit board traces. I'm going to give that a shot - there is a trip
to Rat Shack in my near future.
It's exciting to think I might get this machine running well again. The
keyboard has been a big hangup for me. I don't mind fixing a few keys
on this new keyboard, but tearing up all of the keys on the last
keyboard was too much to fathom. After it's running I'm going to be in
sponge mode for a while, and then I'm going to try to setup a
development environment - I think this machine needs a TCP/IP stack. :-)
Mike