New (broken) pedal day!

[fuzzbuzzfuzz]

Yes, apologies, very hectic here, quite a stressful month alas.

Pics to follow later in the week.

The layout however, is identical to Pepe’s pictured above.

You will see the wire leftmost soldered to the wah potentiometer (brown purple) threads down and is soldered directly to the input jack live/tip. (the remaining wires in the ream head to the circuit board and elsewhere).

[laurie]

Righto ... schematic is (allegedly) this one:
https://www.freestompboxes.org/viewtopic.php?t=25794

The pedal is a volume pedal when the wah is disengaged, so yes, it does appear that the pot connects to the output socket.

The crackling could be many things, but my money would be on the pot (even though it is new). First thing I'd do if it was on my bench would be try cleaning the pot with some Deoxit.

[fuzzbuzzfuzz]

That's right, forgot to mention its a Volume too.

Yes, when I picked it up it was scratchy, hence a pot change. I've used Contact cleaner liberally but as yet no change.

[fuzzbuzzfuzz]

Righto ... schematic is (allegedly) this one:
https://www.freestompboxes.org/viewtopic.php?t=25794

The pedal is a volume pedal when the wah is disengaged, so yes, it does appear that the pot connects to the output socket.

The crackling could be many things, but my money would be on the pot (even though it is new). First thing I'd do if it was on my bench would be try cleaning the pot with some Deoxit.

Output - yep, thanks for the correction.

[laurie]

Yes, when I picked it up it was scratchy, hence a pot change. I've used Contact cleaner liberally but as yet no change.

Roger that.

I'll have a think about it and see if anything else stands out to check in the schematic.

[fuzzbuzzfuzz]

Thank you Laurie, appreciated.

I have seen various posts here and there to indicate it can be a problem with wahs.

I also not this wah is quite microphonic, tapping the case for example. There may be a grounding issue or the inductor is on the blink.

[laurie]

I also note this wah is quite microphonic, tapping the case for example. There may be a grounding issue or the inductor is on the blink.

That's a smoking gun. Perhaps a dry solder joint - they are known for producing crackling. Can you share high-res pics, particularly of the trace side of the board?

[fuzzbuzzfuzz]

OK will do.