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.