Why is my fuzz face making this static noise?

[henryd12]

Hey guys, so I built a fuzz face with nos resistors and capacitors, as well as nos tfk bc108c transistors. It works although it makes this static noise that sounds terrible. I built it on a pigeon fx npn pcb. I swapped the transistors a few times and tested the capacitors and resistors on my multimeter which show up fine. Everything I've tried has not fixed it at all. Even cleaned the pcb to get rid of excess flux.

The one thing that I noticed though is when I built it out with the same components on a breadboard it doesn't make that noise at all. It's just when it's built into the pedal.
The first half of this recording is fully built in the pedal, and the second half is on the breadboard.

I would be super excited if anyone knows what I can do to fix this problem?

Link to audio clip of this noise:
fuzz face noise

[GibsonGM]

Can you post the exact schematic you built from?

That sounds like gating plus HF oscillation to my non-engineer ear  

Is the pcb grounded to the enclosure, enclosure grounded to the battery/power supply, thing is IN the enclosure?

Are you using a battery to power it?  Positive ground?

[antonis]

No Welcome, your Highness..??

[GibsonGM]

Sorry.  Ahem....Oh, Welcome Adonis, most esteemed consort of Aphrodite!!!   

But more importantly - Welcome, Henry D - you are in the right place, and we're glad that you're building and asking us questions   

[Electric Warrior]

That's fairly typical for silicon Fuzz Faces. I always figured it was some kind of layout or wiring issue, as a vintage unit I restored did not have this issue. As you are using the pigeon fx board, apparently it's not the layout either...

[Lino22]

This sounds gated.
Please post the voltages on all transistor pins.
The noise can be an oscillation caused by the input and output part/wire close together, "talking" to each other.

[pacealot]

Yes, one puzzling aspect of the original Fuzz Faces compared to their contemporary fuzz brethren is the absence of shielded internal signal path wiring. If the input and output wires are in close proximity inside the pedal, and the wiring on the breadboard was not, that could certainly explain how the problem occurs while in the enclosure but not on the BB.

Also, a "solution" of a small capacitor from Q1 collector to base isn't a bad one for silicon FFs in general, as it can also improve the tone (subjectively of course) as well as reduce some of the predisposition to crosstalk/oscillation/etc. But first and foremost I'd suggest moving around those input and output to-and-from-the-PCB wires to see if it changes things...