[sdiy] esq1

[gavin]

Hey all,
I have this ESQ1 here that will not shift off one of the presets.  When I
power it up it immedeatly goes to:
INT 1 PIANO 1 ORGAN 1 3TRUMS VELBAS SLDRUM SLOSTR MIXED SINPAD WAVBEL 4XFADE
and no amount of button pushing will take it anywhere else.
I'd like to DIY it and have the schematics but don't know where to begin.
Anybody have experience with these or know a good place to look?
thanks
Gavin