Armorers: Amico scoring machine info?

Wondering whether anyone out there might have schematics and/or wiring
and circuit diagrams for an Amico RS-01 scoring machine. I've been
holding ours together with spit and chewing gum for a while, but
there's been a ground wire broken for which I can't find the right
contact. In club last night we tried the machine in sabre for the
first time in ages and found that a touch resets the machine, so I
guess it's time I found where that wire goes... :^) Might also be that
the machine expects to see a capteur.

At any rate, any literature for that machine would be helpful. Also
collecting anecdotes for future troubleshooting...

TIA

Ed Ploy
Williamsport (PA, USA) Fencing Club