> I think I had plugged the A190-2 the wrong way the first time I
> plugged it into the power bus board, and might damaged the unit.
> It seemed to be working fine, as it was receiving midi messages
> and activating the A110 both from the CV1 and pitch bend from
> CV2. But the gate output problem and out of tune scale indicated
> there is something wrong really. Maybe I will be necessary to buy
> a new one.
>
> Thank you for the kind attention.
>
> Sidney.

If the A-190-2 was plugged in the wrong way the gate output is fried. In
this case the collector of the npn gate output transistor is connected
to -12V which destroys the transistor. This explains why the gate output
does not work anymore. It is difficult to say if other sections of the
module are defective too. You may try to replace the transistor (Q1, BC547C)
to see if this is the only defective part. Or you send in the module for
repair to the dealer where you purchased the device.

Best wishes
Dieter Doepfer