This guitar pedal got here in for restore, and so as to add a DC socket on. (Jeremy Clarkson not included, fortunately)
I could not discover a diagram wherever, so for future reference, and for the frequent good, this is the schematic:
TR1 was U/S in my instance, though, in an analogous method to the Trio amp (here), had two junctions, and examined OK on the transistor tester!
Wonderful two BC109’s and a slack handful of bits and items, can fetch a lot cash on eBay!