Corduroy Fuzz biasing Q2

[blivjc]

Hi! I built a Corduroy Fuzz and somehow I am having an issue with Q2. When I try to bias Q2, the voltage keeps changing. There are no issue with Q3 and Q4, but I cannot bias Q2. I have no idea if this is normal for this pedal or I screwed up somewhere. So any help will be appreciated. FYI, I have an old circuit board. Thanks!

 

[moonlightpedalbuilds]

Try switch transistors. Btw where did you get your transistors?

 

[Nostradoomus]

Make sure you buy legit J201s from legit sites like smallbear etc. eBay Jfets are generally bad/out of spec/fake

 

[blivjc]

I think I figured it out. The old board didn't have 1M between the gate and the ground. So when I added that, everything's fine. Thanks for the advice, guys!

 

[moonlightpedalbuilds]

I think I figured it out. The old board didn't have 1M between the gate and the ground. So when I added that, everything's fine. Thanks for the advice, guys!

Old board?

 

[blivjc]

Yep! One without the trim pots.

 

[Chuck D. Bones]

That would do it. Corduroy is a pretty cool fuzz. The toggle switch is up for Tight, down for Big.