Would somebody mind posting their Cosmpolitan voltages for me? For what it's worth, this is what mine are with the pots at max settings:
BS170 Volts
S 3.06
G 5.36
D 5.38
BC109 Volts
E 0
B 0.55
C 0.59
2N1306 Volts
E 0.49
B 0.59
C 2.8
So far, this is what I've done:
- I've double checked the components, which appear to be correct.
- Checked continuity on all of the pot solder joints.
- Visually inspected the solder joints under a microscope. I reflowed one of the joints. It was probably OK, but it wasn't as shiny as I like, so I reflowed it.
- Audio probed and the output of the BS170 is VERY weak. Changing the fuzz pot doesn't change the voltages either. I suspect there could be an issue with BS170, but I don't have a spare here. Unfortunately, I don't even have a 2N7000 to try out. Time to add some stock, I guess.
Additional notes:
- I did beat up the board a bit. In a fit of mindlessness, I soldered the pots on backwards first, so I had to take a heat gun to them. I have verified with a multimeter that the pots all still function.
We can close the book on this one. As suspected, it was a bad BS170.