Chorus Pedal repair

[ISC]

I have a Digiplay Ch70 stereo chorus to repair for a friend, some wires are broken and there is no sound in bypass or when engaged.
Looks like the input wire and ground wires are off, it  does appear to be similar to a Boss style IE same centre power connection and Jfet bypass switching. I have Googled for a schematic and searched here but only came up with [urlhttp://filters.muziq.be/model/digiplay/ch70[/url].
Checking with a DMM the ground on 9v socket to the cct board is not getting to the I/P or O/P jacks and the momentary bypass switch has a wire missing. This pedal looks like someone has messed around with the wiring, if anyone can point me to a schematic or if this is a copy of another well know pedal your help would be much appreciated.