Thanks, Michael.
?
In my case it is the Gemini 2 output, but I don't suppose the encoder detector is something that could be replaced. I don't have the G-2 open right now but I kind of remember all the chips are flush mounted on the board and micro-soldered. So it's replace the whole board or nothing I assume. I'll have to see what HGM has to say.
Best regards,
John