deskthority

That's a good theory! And yes, the two arms for one key aren't connected - well, certainly not in a way my multi-meter sees. Maybe that explains the little bit of extra circuitry on the keyboard controller board that had me puzzled (pictured) - the capacitors and transistor. I'm still a bit lost on ...

Hi all! I'm repairing an unusual machine - a French Goupil II from 1982. It's a 6800 based machine (6808 to be exact), and it's been a long process. It's now booting, but the keyboard is giving me trouble and I'm trying to understand it. I cannot get my head around how this keyswitch works!

PXL ...