I built the Muffler noise gate as specified in the build doc, but the signal noise does not seem to be affected by the circuit much, if at all. I have confirmed the transistors and IC are correct by name, as well as capacitors. I checked all resistor carefully when installing. What could be the problem? Here are some shots of the build: Muffler Noise Gate
. When the pedal is active, I seem to get the same level of guitar noise throughout the range of the potentiometer, which is the same as normal signal volume.
Muffler Noise Gate, no effect
- Thread starter Jake2020
- Start date
Ok, good to know. I ordered these parts from a cheap supplier on Aliexpress, so they may be suspect. I have seen other posts where a TL072 was substituted, or other IC. Would you suggest some other compatible IC I might have on hand I could test to see if the one I'm using is faulty? Thanks!
JetFixxxer
Well-known member
Sorry, Didn't see the arrows for the slides.
N.p. thanks for looking. The only other thing I haven't checked is the values of all resistor, but I'm pretty sure they're right, although I'm not that good at knowing what they are by band color. I'm pretty certain I checked them carefully before soldering, could a misplaced resistor cause this behavior?
BurntFingers
Well-known member
Maybe it's the pot itself, or the switch? Does the led light up when engaged?
It's also prudent to rub the solder side with isopropyl alcohol and an old toothbrush, gets rid of any floating crud. I know you said you don't think it's a problem but unless your vision is microscopic we wouldn't be able to tell anyway.
It's also prudent to rub the solder side with isopropyl alcohol and an old toothbrush, gets rid of any floating crud. I know you said you don't think it's a problem but unless your vision is microscopic we wouldn't be able to tell anyway.
You really need to clean the solder side of your Board as BurntFingers suggested.
To me, when you magnify it looks like you might have Solder touching each other.
Your Solder has the appearance of Dry Solder joints.
Even a Good quality Electronic Cleaner spray should remove the crud.
Your Soder tip needs to be Perfectly clean & tinned so it is always looking like Chrome.
What type of Solder Flux Core did you use ie 60/40, 63/37,
Cheers music6000
The switch and led activate normally. I hear sound at the same volume with both wet and dry signal. When I turn the pot, I can hear a change in pitch (on a noisy power supply) but it does not seem to be gating any noise. I have gone over the solder joints again under magnification, and have found mo problems. Anything even remotely questionable, I reflowed.
Mine worked first time ,I would spray isopropyl on it then circuit board cleaner a couple of time to clean the board I found it helps clean the flux and crap and you can see any bridging, one or two on your towards the top have little dags showing reflow your solder and check there is no continuity where there shouldnt be !!or try a new IC good luck
