DIGITECH WH-1 Treadle LED circuit issue

A friend of mine own an old Digitech Whammy WH-1 which was working, and then showed some issues with the mobile treadle LED circuit.
He attempted to repair the pedal by himself using a zinc-plating blowlamp - if I can say so - and he made a havoc (see pics below).

Any of you have pictures of this little original circuit in good condition ? The schematic of the WH-1 ? The specs of the parts on that little mobile circuit ?

In short : any help is aprreciated...


Thanks !

A+!