> From: conorstrachan@...
>
> I swapped them around and the fader is fine. Any ideas of
> where to head next to, So the envelope depth control is not
> responding. It's now definitely not the fader. It works
> through controlling externally through midi so it mušt be
> working at some point.

Since you've already ruled out a cold solder joint on the slider by resoldering it, it's almost certainly the 4051 that the slider connects to. The only other possibility I can think of is a bad trace on the board, which can happen if the board suffered water damage and the resulting copper oxidation.

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Ciao, Paul D. DeRocco
Paul mailto:pderocco@...