Pro-10 Dual Overdrive Not Working--Build Docs?

greypilgrim76

greypilgrim76

Active member
Hi All,

So I just got my Pro-10 board populated and (very tightly) installed in the enclosure. When I plug it in, both LEDs work, and I'm getting bypass signal, but no sound from either side engaged. I've got an audio probe and am happy to start troubleshooting, but I can't seem to find a schematic or other build docs anywhere. For assembly, I just followed the component values listed on the PCB silk screen. I'd read previous threads saying to just use the components from the Blue and Green drive docs, but I ended up having to pull some components not listed on either of those, and I also had some left over on the Green parts list that didn't get used. So, I really have no idea how to troubleshoot without a schematic and a build doc with part positions labeled (R1, D3, etc.) Any suggestions? (Or documents?)

Gracias!
 
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I did some searching and found this post with the full schematic

Jazzwolf

SOLVED Post in thread 'Pro-10 Dual Overdrive issues'

Jazzwolf said:
OK. So the schematic from the single "Green" pedal seems to have significant changes from this dual pedal. This is making it hard for me to troubleshoot the issues. IC 1.2 is actually on the IC 2 and IC 2.2 is on IC1. From some of the reads I think there are some changes past the 1.2 chip on the schematic as after that I have had a hard time tracing it. I am currently doing a full visual band review on the resistors to see if they are matched the value printed on the board. This is my best hope of identifying an issue until the documentation is released for this build.

Thanks!

Ryan...
Click to expand...
  • Wow
 
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jcpst said:
I did some searching and found this post with the full schematic

Jazzwolf

SOLVED Post in thread 'Pro-10 Dual Overdrive issues'

Jazzwolf said:
OK. So the schematic from the single "Green" pedal seems to have significant changes from this dual pedal. This is making it hard for me to troubleshoot the issues. IC 1.2 is actually on the IC 2 and IC 2.2 is on IC1. From some of the reads I think there are some changes past the 1.2 chip on the schematic as after that I have had a hard time tracing it. I am currently doing a full visual band review on the resistors to see if they are matched the value printed on the board. This is my best hope of identifying an issue until the documentation is released for this build.

Thanks!

Ryan...
Click to expand...
  • Wow
Click to expand...
Nice! Not sure how I missed that. That schematic should get me a lot further down the troubleshooting road. I don't suppose anyone has the PCB image with the components labeled using R2, D1, etc.? I can use the image of the PCB itself on the website with the component values themselves, but there are enough duplicates I'm not sure which components fit where in the schematic at times. (Multiple 47k reistors, 1u film caps, etc.)
 
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greypilgrim76 said:
Nice! Not sure how I missed that. That schematic should get me a lot further down the troubleshooting road. I don't suppose anyone has the PCB image with the components labeled using R2, D1, etc.? I can use the image of the PCB itself on the website with the component values themselves, but there are enough duplicates I'm not sure which components fit where in the schematic at times. (Multiple 47k reistors, 1u film caps, etc.)
Click to expand...
Neither circuit is huge. Test with the probe at your active points that should narrow it down. Have you checked your voltage on ic’s to verify those look right?

both circuits are seperate with seperate ins and outs. If neither is working its likely a wiring issue or a power issue.

And check the classic is in plugged in to in, im notorious for this one
 
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