Hi Sidney

> I tested the LFO sending a square wave to the A140 and noticed that it responded. The A190-2 seems that is maybe faulty because it's not sending the gate to any module. Maybe it's my fault.

ok, now tune the VCO extremely low and then insert the Gate-Out from the
A190-2 into the VCO CV1. Does the VCO jump quite high (at least five
octaves) if you press a key

Florian