Vintage Synth Repair

have you got the schematics? all of the pitch adjustments are summed onto the 1st input of ICU2A.

the pitch wheel has +12 & -12 connected to its two ends, & the "wiper" goes via two diodes (to create a dead-band) & R25 (620k) onto the summing buss & thence to U2A.

so.... find R25 & reduce its value to (say) 330k, & see if that does what you want. I put a trimmer across mine so I could fine-tune it to +/- an octave.

hth-
duncan.

--- In vintagesynthrepair@yahoogroups.com, "Nicolas" <nico678@...> wrote:
>
> Hi everybody,
> 
> Is there any way to adjust the range of the pitch bend on a Moog Rogue?
> I would  like to adjust so that it bend up to one octave when when it is full up. Same thing in the opposite direction.
> If there is no adjustment, is there any mod that can be done on the circuit?
> Thank you!
> 
> Nicolas
>