Hello Barry, thank you again for you’re reply. I connected: I to jack stereo (tip) O to jack mono (tip) BI to main board In BO to main board Out In mainboard to sleeve stereo out mainboard to sleeve mono is that correct? I did the adjustment with the trimmers: measurement as in the picture. Q1: D: 4.72 S:1.42 G:0.01 Q2: D: 4.64 S: 1.36 G:0.01 Q3: D: 4.64 S: 1.22 G:0.01 there is a light hum when connected to my amplifier. bypass no sound. thank you in advance ..read more

So with power to the PCB there is power. Work on the LED issue later. (You need to pick an LED location.) I am not sure you are reporting the voltage to the JFETs correctly. When looking straight down on the JFET and the top orientation is the same as the letter D  The top pin would be D for Drain. You are reporting 0v for Drain. It should be around half the supply voltage as you adjust the Trimmer associated with its JFET. Make sure your supply voltage to the PCB is just a little over 9v. (Measure it with your DMM) Once you get the Bias correct, or close, fix the wiring as nothing will w ..read more

Update: I also see it is wired incorrectly to the 3PDT wiring board. You need to wire from the Main board to 3PDT – BI, and BO. Then from 3PDT –  I and O to the Jacks. You have done the opposite ..read more

More information is needed. You say no power, or do you mean no sound? Power can be tested with a Multimeter. If it is no sound do you mean in active mode only? How about bypass? Did you bias the JFETs? What JFETs did you use? What are the voltage readings of each JFET ..read more

Hi, I am a beginner builder. My latest project; no power… I build in a second led, can that be the problem? hoping on you’re help. cheers Marije   ..read more

Figured it out.  C1 needed reflowed and all was good. Thanks ..read more

I would re-flow Volume pot lugs, and C2. You can also replace C2 if that does not work. If you need more assistance after that create a new thread with clear pictures and description ..read more

I’m building this as well. Everything is in, i’ve connected to my test box and looper and all 3 circuits worked fine. Put it in the box, and the Phaser isn’t working. It’s very, very quiet. I pull it out of the box, connected back to the tester and probed. It would seem the issue is between TL072 ic and the output.  But…. not being able to clearly identify any issue, i unplug everything and take a break.  I come back, plug it in, and probe the output and it works!.  I click the switch off and back on, and… nope, not working. I unplug it all, let it sit for a bit, plug it all bac ..read more

I need you to clarify a few things. It is best to rule out anything possible up front. Do any of the circuits work on their own with adequate volume etc? Explain for each. If the Wattamp does not work explain which type of Mosfets used, give voltages for all three, and details for what specifically is wrong. Low volume, no sound at all, noises, etc. If the Fuzz does not work give voltages for all 3 transistors and explain the details. Low volume, no sound, noise, etc. If the Phaser does not work give voltages for the transistors, and both IC chips, and details. Keep issue specifics, voltages ..read more

I am glad you got it sorted out. ? The circuit is not biased for 2N7000. Now get a good and proper Show Off post done ..read more