SOLVED Malachite build developed a "gated" sound...

The Gator

Well-known member
I have a malachite build that has developed a "gated" sound to the beginning and end of each note. Especially noticeable when the mid control is turned down.
I noticed i am seeing some odd voltages on the non inverted input pin 3 on the 1.1 op amp in the schematic. I am only getting 2.9vdc. Anybody have one hand they could measure ?

Thank you
-Gator
 
Last edited:
Ok. Just seems odd.
Maybe it has nothing to do with the problem. I do have proper voltage on the outputs of all six Opamps.
Maybe the gated sound is due to a bad connection or solder joint. Im gonna keep poking at it.
Thank you for the response!
 
What kind of DMM are you using? Sounds like it's loading down IC1 pin 3. The good ones have 10Meg input impedance. The cheap ones from Harbor Freight are 1Meg.

Visual inspection is your best troubleshooting tool. Lotsa light and magnification. I just fixed a Corduroy pedal I built three years ago. Worked great up until last week when a cold solder joint on a transistor lead decided to go intermittent.
 
Last edited:
Back
Top