Lovepedal Jubilee - adding a pull-down resistor?

[tracer03]

So, I've built a couple Jubilees in the past - including all the mods listed here in the forum and on the layout page, and it's an awesome circuit, BUT...

The consistent complaint I get is the switch pop when the circuit is engaged. I use LMS switches, ground everything, and it still pops. I've eliminated everything I can (LED off switch, star grounds, etc.) to no avail. What would be the easiest way to add a 1M-2M2 pulldown resistor to the layout to help mitigate the issue?

[induction]

This layout?

The drive pot comes before the input cap and the volume pot comes after the output cap. Both of these are grounded. I don't know why it's popping, but unless there's a build error extra pulldowns won't help.

[tracer03]

That's the one. I've built three of them - all working, knifed strips, checked solder joints, etc. I measured the components before soldering, etc. I've tried replacing the stomps, checking continuity, star grounding, etc...and they all pop when engaged.

[induction]

Try measuring the DC voltage at the input, output, all IC pins, and both sides of each cap. Do it in bypass and again when engaged.

[alltrax74]

Could a pulldown resistor between drive 3 and Vol 1 help ?

[induction]

Drive 3 is the input and Volume 1 is ground. So that would be a pulldown on the input. The Drive pot itself is already pulling down the input.

It's unlikely that there's DC on either the input or the output. But if there is, and it's enough to cause a pop, it should show up on a meter.

It would also indicate that either the Drive pot is faulty, or the problem is probably elsewhere in the signal chain, and not in this pedal.

Again, this all assumes there's no error in the build.

[breianae63]

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