Help with Oasis (EQD Dunes) Build. Voice toggle stopped working

[rstofferahn]

Hi there! Fairly new to building and modding pedals. I have have a rough idea on how to read schematics but still learning.

Im building an Oasis (EQD Dunes). I got it finished and sounding great, I started to do some basic mods (small value changes here and there) and everything was going great, but at some point my Voice (diode) toggle (on/off/on) stopped working. It sounds like its just bypassing the diodes. Swapped the switch and that didn't help.

I did have it outside of its enclosure on my pedalboard while testing. Is it possible I shorted something out?

Ive reversed all the mods I did just to be sure, reflowed every single solder joint, pcb looks fine, no visible shorts or anything touching each other.

Any suggestions on where to start?

Thanks!

 

[Erik S]

Any suggestions on where to start?

Post some pictures.

 

[rstofferahn]

Heres some pictures with all the mods.

R6 - swapped the 22k resistor with an on/on switch with a 27k resistor and a 6.8k resistor
C4 - swapped the 10uf cap with a 1uf cap.

Changed up the Asymmetrical clipping section (1N4148) with LEDs in D2 and D1 and a 1N5817 in D3

 

[Erik S]

Ive reversed all the mods I did

Heres some pictures with all the mods.

Are the pictures current? Or are they from before you reversed all the mods?

 

[rstofferahn]

Yeah they are current. I probably should have left it, but I put them all back since they didnt have any affect on the toggle switch not working

 

[Erik S]

Can we get a clearer shot of the toggle switch terminals?

Also a marked up image of the schematic would be cool just for convenience if you have one.

Hard to be sure, but that switch looks like it says on/on. You mentioned on/off/on.

 

[rstofferahn]

Hopefully this makes sense

 

[rstofferahn]

SOLVED! I had forgot that at one point I swapped the A500k pot for drive with a B1M to replicate Gain B on the Palisades. It looks like I partially lifted the trace going to the middle lug of the pot, so soldered it back down and got that switch working!