Does anyone know if the membrane/ribbon connectors on terminal Model M's is the same as that used in the pc versions? If so, would be an easy matter to connect up a Model M circuit board to the terminal board assembly (these seem to be a much heavier build) - I would like to give this a try - I have a couple of these and the internals - plastic rivets, etc. are in far better shape on the 1986 vs the 1990 pc version despite obviously much more abuse to the former.
I cannot answer this question directly, but I do know that IBM/Lexmark/Unicomp have changed the controllers several times, drastically, over the years.
I have at least a couple of sets of dead membranes and controllers, but do not see much point in trying to figure it all out.
Unicomp sells something that they refer to as something like "membranes" for about $20 which would be great as long as the controller was part of the package, but without it, I don't see the point.
If anybody knows better about this, I would appreciate it.