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Nah, I didn't tried the 47nf version (as suggested with the pcb and biggmuffpage's schematic), I went directly with the 470nf caps.

No problem with the high/low switch.

I compared different schematics and layouts with the one I have, can't find a difference.

The curse of the pharaoh takes its tall on me.

I'm using a kind of "all Muff purpose" pcb from Coda Effect, a really nice guy from France.
Check this out : https://www.coda-effects.com/2016/01/big-muff-pcb-available.html ; https://www.coda-effects.com/2016/04/black-arts-toneworks-pharaoh-fuzz-clone.html

All ready did an Green Russian clone with the same pcb, work like a charm.

Yeah I will try to replace the 470nf but first I really want to understand why this don't work.
And it's always a pain in the ass to de-solder components.

Anyway thanks for the respond Jack, and happy halloween, halloween, halloween; in advance 

Hey guys,

I built the pharaoh using the schematic from Big Muff Page, this one : http://www.bigmuffpage.com/images/schematics/Pharaoh%20Big%20Muff%20Clone%20Schematic.jpg

I changed the caps values from 47nf to 470nf, but something is wrong when I switch to the 39k resistor (the high setup) :
it's like the caps are charging or something, I play big chords and the volume is crashing then comeback.
It only work a bit when I roll down the volume from my lp.

It's only my third built so I don't really know what's wrong. I have double checked values and polarity but nothing on this side.
All the schematics I found does not mention a change of values apart from the 470nf 47nf dilemma.

Someone have an idea as to where this problem could be coming from ?

(hey first message here, glad to be part of such a great community  )