Bass Preacher Schematic

[mimmotronics]

Hi there everyone,
I've got a Bass Preacher on my bench, everything works except the Sustain

I tried adjusting the trimpot, that doesn't do much except adjust the volume (and noise!) of the output signal.

Tested the potentiometer and there doesn't seem to be anything wrong with it. Cleaned it with some Deoxit while in there. I also found a cold solder joint on the input jack, so I reflowed all the jack connections - that obviously didn't fix the issue though.

I noticed there are two 7660 charge pumps - I plan on measuring the voltages on there later today. In the meantime, I figured I would ask here: does anyone have a schematic for the EHX Bass Preacher? I can only find Soul Preacher schematics and it doesn't seem to be similar.