Monarch accidentally received 18v

dlazzarini said:
It’s a pedal I made with the klon buffer in it. Just the buffer and nothing else. Will that suffice?
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Yes, that will suffice. The Klon buffer will load the circuit a little bit, but not so much that we get a false reading.

dlazzarini said:
Ok Chuck. I guess I’ve been having some senior moments. I’ve got one of those Positive Grid Spark amps that’s been sitting in my room for over a year. Totally forgot about. The audio probe should be ok going in to that one shouldn’t it? I tried it out but I don’t see a whole lot of change. I can definitely hear the signal better on lug 3 of the gain pot now but it’s still at a much lower volume than before R9. I can definitely hear it better though
Click to expand...
Without a schematic, I can't be sure how the Spark amp is affecting the circuit we're testing.

When you probe pin 3 of the GAIN pot, does the volume change when you rotate the gain pot?
 
I looked at all the resistors twice & they look good but their is some light reflection on them so....
Here is my go to Resistor Calculator so dlazzarini, Can you confirm they are all correct :
68k is ?
Click on Bands for 5 colour Bands
resistor.cherryjourney.pt

Resistor Calculator

Resistor Calculator is an App developed by CherryJourney to help the user find the value of a resistor.
resistor.cherryjourney.pt resistor.cherryjourney.pt
 
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I appreciate all your help guys. Tomorrow after work I’ll hit it again. I’ll triple check those resistors and I’ll verify if the gain pot changes volume when rotated. Thanks guys
 
I’ve got a question for you guys. I’m here at work but of course my overthinking brain is somewhere else. Could I breadboard up the power section and just up to the point I’m stuck to see what I get there, or do I need to do the whole thing.
 
That is a good way to go because you can make measurements on your breadboard and PedalPCB unit and compare. I'd at least breadboard all of the JFET stages.
 
Chuck D. Bones said:
That is a good way to go because you can make measurements on your breadboard and PedalPCB unit and compare. I'd at least breadboard all of the JFET stages.
Click to expand...
Ok I’ll get on it. I won’t be able to do it all today but I’ll get started. I’ve got some parts for restock showing up tomorrow
 
dlazzarini said:
I’ve got a question for you guys. I’m here at work but of course my overthinking brain is somewhere else. Could I breadboard up the power section and just up to the point I’m stuck to see what I get there, or do I need to do the whole thing.
Click to expand...
Yep, But definately check all your resistor values to make sure, One stray one can screw the whole pedal!
 
Ok I’ve got it on the breadboard up to Q2. Waiting on my parts so I can continue, but I can tell you right that the problem is already apparent at Q1 on the pcb. Q1 drain on the breadboard has a ton more gain than what I’m getting at Q1 drain on the pcb
 
Chuck D. Bones, music6000. Got the Monarch working as it should on the breadboard. Something is definitely going on early in the circuit. I’m not get near as much output off of Q1 as I am on the breadboard. The real wacky part is when I probe leg 3 of the volume pot while rotating it, it’s acting like the gain pot. All the way down cleans it up and all the way up I have gain. At the same time the gain pot is acting like the volume pot. All the way down cuts the sound. Turn it up and the volume comes up. Those controls are on complete opposite sides of the circuit. This thing is just messing with me now. I’m going to bed.
 
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