Gentlepeople,
I have a Philips logic analyzer (PM3585) which is about 20 years old at this
point. It seems to be basically functional except for the keyboard, which
unfortunately is a critical part.
This is one of those molded rubber type, with a circuit board behind the rubber
that has contact areas made of carbon film (at least they are black in color)
and on the back of each key a small cylindrical bump also coated with carbon.
Some of the buttons work but most don't seem to even if I press hard.
I've disassembled the keyboard, which was easy enough. Inspection shows no
damage and no signs of corrosion or contamination. I wiped everything with
isopropyl alcohol anyway. The result is no change in behavior.
Any suggestions for what to do next?
paul
