Muffler build has no sound

[Mr.H]

Troubleshooting these situations are still new to me, so bear with me; I understand there is stuff for me to learn still, and I am working thru the schematic for the first time.

Bypass signal is present, but no signal when effect engaged.
LED does not light up, either.
Rechecked all resistor values, and all seems appropriate visually. Did check with DMM, and I have some odd values, which are:
R11=1.925k
R10=537.6k
R18=90.5k
R1=OL
Got the idea to use DMM to read resistor values from an article that is supposed be written by R.G. Keen, who said "test everything."

Getting voltage into the circuit @ 8.82 and voltage at R100 is 8.60, but at LED it is 0.1.
Still unsure of how to approach the rest of this. Posting pics of my work, so far. Please advise, and thanks in advance.

 

[Mr.H]

The first was from eBay, but I got another from small bear. My problem still persists.

 

[moonlightpedalbuilds]

Try changing the tl072 and double check the power supply connector. Center negative. Check if you are getting to the circuit pin 8 of tl072 to ground.

 

[BuddytheReow]

You've got signal but no effect, right? I think you and I are in the exact same position

 

[Mr.H]

Yes, signal but no effect.

 

[BuddytheReow]

At least I'm not alone here ?. What are your voltages on the transistors?

 

[Chas Grant]

Turn the gate pot fully clockwise and then audio probe pot at pin 3, and the op amp pins 1, 2, 3. With the pot all the way up you should have audio on all these.

 

[BuddytheReow]

@Mr.H I just replaced my JFET and my effect works. If you want to check my voltages on my forum page it may help. Just search "muffler"