> From: steven
>
> i did the reset that was described in the service manual-- {
> D-12-stop-- etc. } but i just found the problem [and i might
> have caused it during the reset] --it has to do with volume
> -- i can retrieve the quiet or almost blank sounds by using
> the volume on the assignable control---
> perhaps i didnt get the volume right when doing the offset
> calibration -- so maybe one voice was a little louder with
> the rest being inaudible-- but it appears that i can get the
> sounds back and re memorize them with the louder volume--so
> all might be OK--- i hope.
>
> the odd thing was that only some sounds were affected--- so
> im not sure it was the volume offset
>
> it was pretty weird--also the tuning went off a half step
> after the 'freakout'-- but i could retune that.

The volume offset miscalibration can affect different sounds differently.
Brighter sounds will tend to use lower volume settings, thus making them
more sensitive to miscalibration. More heavily filtered sounds will tend to
use higher volume settings, thus making them less sensitive to
miscalibration.

If this happens again, it might be worth opening the unit, and reseating any
connectors, especially power ones. Even slightly lifting (but not completely
removing) and reseating the EPROM and RAM chips in their sockets might help,
in case there's an intermittent dirty connection.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...