Woodpecker LED On But No Sound

[delcon89]

Hi all,

Third pedal build so still very much a beginner but this was first with issues.

• Bypass is working when pedal is off but there is no sound when I turn the pedal on.
• Used audio signal tracer and the input signal only makes it to R2, everything after isn't picking anything up.
• C2 and Q1 have continuity with connecting point of R2
• Checked for any visible shorts but did not remove components
• Resoldered a few connections that I assumed may have been weak

Still no sound and my inexperience is leaving me blank on what to do next. Not sure if I need to test Q1 or just start replacing components one by one. Before I start taking the board apart I was going to see if anyone had any suggestions on what to test next. I only have a multimeter and the signal tracer and don't know what exactly I should be trying measure next. Other factors I should mention, because I'm not sure if these will help with diagnosis:

• I'm using a J176-D74Z in place of PF5102 at Q1
• Sound very quietly came from post-R2 components and loudly to first few when output jack ground was touching same ground as the signal tracer.

Thanks for any help and suggestions

Lint strands have been blow off

 

[Nostradoomus]

J176 has a DGS pinout, you need one with a DSG. R2 connects to Gate. That would do it! Desolder it and socket that bad boy to test other FETs.

 

[swelchy]

check your electrolytic capacitors as well..... Make sure your negative leads arent flipped.... the pcb layout shows positive at the top... I cant tell the polarity from your photos