SOLVED Nuffin’ from my Muffin

[scheffehcs]

Hello, just finished a Green Russian Muffin Fuzz that doesn’t work! I’m still a noob and I’ve been lucky that my last 10 or so pedals have worked without issue, so I don’t have a lot of practice debugging. Bypass works, no sound when engaged. If anyone can see an issue in these pics or can help me to start debugging, I’d be much obliged.

 

[scheffehcs]

@Chuck D. Bones ok yeah I’m a dummy it’s wired fine. Ok so I checked all the transistor voltages. Here they are:

Q1E: 1.07
Q1B: 1.46
Q1C: 8.86

Q2E: 1.07
Q2B: 1.46
Q2C: 8.86

Q3E: 0.93
Q3B: 1.33
Q3C: 8.10

Q4E: 0.86
Q4B: 1.39
Q4C: 5.22

I’ll check for signal next. Would it be a good idea to go through and test resistor values?

 

[scheffehcs]

Here’s a vid checking the signal at all the transistor collectors, still only getting it at Q4

 

[Chuck D. Bones]

Three things:
1. Are you sure you don't have the input & output swapped? That's the only way I can come up with to have signal at Q4 and nowhere else.
2. The collector voltages on Q1-Q3 are wrong.
3. You definitely have the wrong resistor values for R5 & R16 (R11 is obscured in the pic). Should be 390R, you have 330K.

Recheck all of the parts against the build doc.

 

[scheffehcs]

Ok, just to recap.

I was using too much solder, my iron was not hot enough, I thought I wired the power jack backward but was mistaken, I plugged my guitar signal into the output when I was signal testing, and I used 330K resistors instead of 330r. Feeling humbled, but very happy to say the pedal works and sounds excellent.

I just want to extend a sincere thank you to you both for helping me out. Chuck in particular, I've scoured the boards here and seen how often you give great advice to people here. Thank you for your time and patience.

 

[fig]

That's great!

Being humbled grants one the opportunity for growth.

The folks here make it enjoyable on many levels.

 

[Chuck D. Bones]

You're welcome. We've all been there at one time or another.

Good to know you got it all sorted out. Only thing left to do is mark it SOLVED.