Good evening!
I'm having a problem with my trusty Ensoniq SD1. When I play individual sounds in sound mode, they play with aftertouch or pressure (in Ensoniq-speak) full on. The effect is most commonly volume, vibrato or filtering. Here's where things get weird. If I press the footswitch down (which applies sustain) the aftertouch effect disappears when I release the key and the note sustains with it's normal sound (no aftertouch effect).
When I play in program mode or a sequence, I can disable the aftertouch and play notes normally.
Two caveats with this problem. I bought the machine used in 1995 and the aftertouch never has worked very well so I don't use it. Secondly, this problem surfaced after I played it at church and foolishly did not plug it into a surge protector.
Does anyone have any thoughts on what has gone wrong and a possible solution? I have reinitialized the machine several times with no improvement. The preset mode workaround does the job but is a bit inconvenient. The SD1 works flawlessly aside from this problem and I'd prefer to bring it back to health. Thanks for your indulgence.