Paragon left side must be engaged to pass signal

[zeropluszero]

I tried a quick search to find if this specific issue has been asked but didn't find it.

So I sold this pedal, and the new owner messaged me to say that the left side must be engaged to pass signal. If the left side I engaged the pedals left side works, and if the left and right sound are engaged, the sound is as expected.

I'm guessing it's an issue with the wiring for the footswitch but I'm not sure where I should start.

I'll have the pedal in my hands tomorrow.

 

[giovanni]

Maybe something messed up with the bypass buffer?

 

[Fama]

Maybe something messed up with the bypass buffer?

I don't think it's buffered?

Since the left side also works when toggled on, all I can think of is that one leg of the footswitch (the input-bypass-leg, I assume C3 in the schematic or pin 9 I guess) has a cold solder joint? Or the footswitch itself has some issue. Input and output both obviously work, and you're using the daughterboard so there's no wiring to mess up.

Of course it's also possible for the PCB to have some issue, but that is much more rare. If that's the case you could add a jumper from A3 to C3 (so pin 3 to pin 9).

Edit: Do be careful with "left side" and which pin is which, doing continuity checking with a multimeter is helpful for determining where the issue is, so you don't accidentally mess with the "right side" since the pedal is flipped around when you're accessing the insides.

 

[Robert]

This trace (on the bottom of the board), these solder joints, or the footswitch itself.




There have been a few occasions where a pedal had no sound in bypass because the tip of one of the jacks was touching the enclosure. The circuit gave enough amplification that it'd pass signal when on, but nothing when bypassed.

 

[jwin615]

Also maybe, as that looks to be bare wire

 

[giovanni]

I don't think it's buffered?

Since the left side also works when toggled on, all I can think of is that one leg of the footswitch (the input-bypass-leg, I assume C3 in the schematic or pin 9 I guess) has a cold solder joint? Or the footswitch itself has some issue. Input and output both obviously work, and you're using the daughterboard so there's no wiring to mess up.

Of course it's also possible for the PCB to have some issue, but that is much more rare. If that's the case you could add a jumper from A3 to C3 (so pin 3 to pin 9).

Edit: Do be careful with "left side" and which pin is which, doing continuity checking with a multimeter is helpful for determining where the issue is, so you don't accidentally mess with the "right side" since the pedal is flipped around when you're accessing the insides.

D’oh! I was thinking about the Cliche, totally unrelated.

 

[Vicious C]

Looks like the picture above is the issue if it’s making contact.

If not I had that exact same issue with a pedal yesterday, and it turned out to be a bad switch

 

[zeropluszero]

Thanks everyone, I'll do some digging tonight when I have it in my hands.
That is a bare wire for the output tip but it's not so deep that it should hit a cable tip or anything else, but I'll check it hasn't moved either. I guess if I'm lucky it's just those two pins on the footswitch that aren't soldered right.