On Thu, Dec 4, 2025 at 10:22 PM Tom Stepleton via cctalk <[email protected]> wrote: > > > > > Too late now, but those keyboards were actually standard Keytronics > > ones, and not at all hard to repair. > > > > -tony > > > > I'm fairly certain that the MG-1 I have is one of the Stern Hall machines > mentioned earlier. > > But in re "standard Key Tronic"... The one here is certainly a > foam-and-foil capacitive device like a Key Tronic keyboard is, and surely > the mechanism is basically identical (as are its repair methods). It still > works --- for now. But the pads aren't little round tablets like the usual > KT fare but instead squares with one of the corners notched out (think: the > shape of Utah, but squarer). I do not look forward to those pads degrading > further and expect it may be necessary to get some kind of custom die punch > fabricated in order to produce replacements. > > I can't easily retrieve the name of the keyboard manufacturer at the > moment, but I wonder if anyone knows more about this odd shape of > capacitive pad.
Interesting. The 'MG1 Technical Notes' manual claims it's a 'General Instruments, C.P.Clare International' keyboard. It's certainly capacitive and contains a custom row/column driver/sense amplifier, much the same as the ones in a Keytronics keyboard, which is probably why I assumed it was the latter. The Technical Notes also include a section on interfacing other keyboards to the MG1. There should be no problem in using a PC-type keyboard. -tony
