Patches and discussion for Ensoniq VFX family

I'd ask this guy:
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THESONIQ is the only one authorize service center
by EMU .I work at ENSONIQ factory for many years
and i am the only one left who is still service ENSONIQ 
unit here.Also i have the whole ENSONIQ stocking parts 
here .If you have any ENSONIQ  units need to service ; 
upgrade ; sale or trade in
Please give me a call and i am very happy to help you
 
Fiat justitia, pereat coelum!
            
                          - John Quincy Adams


      From: "wjwilcox@... [Ensoniq-VFX-SD]" <Ensoniq-VFX-SD@yahoogroups.com>
 To: Ensoniq-VFX-SD@yahoogroups.com 
 Sent: Monday, March 6, 2017 8:46 PM
 Subject: [Ensoniq-VFX-SD] Ensoniq SD1 issue
   
    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.