wasnt there a
similar issue with the TRS80 model 1's expansion
interface? I remember hearing that it had a dodgy connection
and many people devised methods of maintaining good contact.
Yep like real goldplated connector replacements which did cost
a fortune. Beleive me you needed those !
Yup, all three of mine have gold plated edge connectors soldered
on to the original edge connectors. It makes things a bit ugly...