I have replaced the voice chips and DCO’s with the AR chips, along with re-capping the power supply. I re-calibrated a few times with the new suggested values but I’m still ‘stuck’ with the stuck voice.
The symptom is that when I power up the synth there is a single voice playing fairly softly. Usually middle C to start with. If I start it up in test mode I get the same result. If I start cycling thru voices in test mode whenever voice 1 rolls around the stuck note will be the note that was just played. I can power it off and pull the first voice chip, and no stuck note. I can swap other chips into voice 1 and the stuck voice remains on voice 1.
I had a suggestion to try cleaning the various VRXX pots so I’m going to give that a shot. Any suggestions?