Hello,
My tech is having a challenge to fix my tuning. I have isolated the issue to voice 5 by referring to the service manual and disabling the voices one by one to find the culprit. Now that I know it's 5 all the time, I am at a loss what to do next. The voice always tunes too high, each tuning cycle (for the voice) a little different. Most times it's around really high, around 10~15 ct to high on my tuner, and if I get very luck, around 7 ct too high, but still way off from the other voices. My tech has done the below, work, but has not resolved the voice 5 high tuning issue. Is there anything I can do on my own, or any area I can point him to that would assist?
It's strange that he notes Voice3, while I see it as Voice5. Maybe it's simply he saw that Voice3 was the worse at the time?????
Work already done:
Change Voice3 S/H IC chip. (TL082)
Change OSC CV resistors x 6 (0.1% selected) (100Ω0.1%)
Adjust +5.0000V reference voltage.
Adjust D/A offset to 0.0000V
thanks,
RDP