Vermona info needed

[Roman Sowa]

Hi all,

Yesterday I buoght Vermona electronic percussion in pawn shop
for about 12$ :-O
totally not working, but after cleanning the fuse area it worked!
The sound is rather boring, as well as presets, but anyway it is
fine instrument. And vintage too! First in my future collection...

I was thinking about throwing up all those diode-memory and strange control
logic
and put uC in it.
But then it won't be so 'vintage' any more.

Does any of you good ppl have any info like schematics?
It is about 45x30x10cm box, 9 instrument volume knobs, master volume
with power switch, tempo knob, start/stop button, 15 preset buttons
(tango, samba, rock - this kind) + 1 shuffle, and two big (compared to LEDs)
flashing lamps.
No type name, just big VERMONA logo on control panel

Thanks

Roman