Mysterioso no outp bypassed or engaged

[johnk]

especially since it doesn't have any output when bypassed.

[Bio77]

What about testing continuity from the daughter (foot switch) board to the main board?  Maybe there's a bum lead or short.

[johnk]

What about testing continuity from the daughter (foot switch) board to the main board?  Maybe there's a bum lead or short.

i tried that but everything tests fine, but the output jack's hot has no continuity to the stomp switch,

[madbean]

What about testing continuity from the daughter (foot switch) board to the main board?  Maybe there's a bum lead or short.

i tried that but everything tests fine, but the output jack's hot has no continuity to the stomp switch,

The three circled areas here should have continuity. If you have none from jack to switch, try checking the two spots circled on the main PCB.

[johnk]

yes, i checked those and there's no continuity. i even jumped it with a wire and the bypass works but not the effect.

[johnk]

is there any chance that i could get another set of PCB's for it?
it says "sold out" on the order page but i was just hoping that you might have an extra set.

[madbean]

is there any chance that i could get another set of PCB's for it?
it says "sold out" on the order page but i was just hoping that you might have an extra set.

Unfortunately, no. I don't have an ETA yet on when I will have more, although I do plan to continue to offer the project.

I'm puzzled about the lack of continuity. The trace that connects those two points on the main PCB runs along the right edge on the top layer. Here are the traces without the tPlace layer so it's more clear. So, it is possible that there could be some nick or imperfection on that trace causing the lack of continuity. I don't see any obvious damage on the PCB but it's hard to tell from one photo.

Since you were able to get bypass with a jump wire, then the next thing to do is audio probe the effect path like I mentioned earlier. This may clue us into why the signal is not getting back to the bypass switch and then the output. Other than that, maybe a quick teardown to look at the underside of the PCB for any possible solder issues, bridges, etc.

[gordo]

I'm still hung up on the output blade on the jack being so close to the chassis.  Maybe it's just the photo but you're sure it isn't hitting the enclosure when you plug in?

[jimilee]

I will contribute this, I've been doing this over 10 years, I still make the occasional soldering mistake. Brian has had a few troubleshooting threads himself. Take that for what it's worth.


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[johnk]

is there any chance that i could get another set of PCB's for it?
it says "sold out" on the order page but i was just hoping that you might have an extra set.

Unfortunately, no. I don't have an ETA yet on when I will have more, although I do plan to continue to offer the project.

I'm puzzled about the lack of continuity. The trace that connects those two points on the main PCB runs along the right edge on the top layer. Here are the traces without the tPlace layer so it's more clear. So, it is possible that there could be some nick or imperfection on that trace causing the lack of continuity. I don't see any obvious damage on the PCB but it's hard to tell from one photo.

Since you were able to get bypass with a jump wire, then the next thing to do is audio probe the effect path like I mentioned earlier. This may clue us into why the signal is not getting back to the bypass switch and then the output. Other than that, maybe a quick teardown to look at the underside of the PCB for any possible solder issues, bridges, etc.

thanks for that trace diagram! i'm going to  try to tace everything out.
also, please let me know when you have another batch of them made and are available.
i have a feeling that i somehow damage the trace going along the bottom edge of the main pcb but even if i did , i should be able to use jumpers to repair it.

[johnk]

Mysterioso mystery SOLVED!
just as i thought after testing continuity, i found two broken traces and added jumpers and it works perfectly now.
here's what i had to jump (green jumper and a jumper from blue dot to blue dot):

[johnk]

DONE!