I did get these to work by changing the ICs. (Another lesson in buying from reputable sources to begin with.) Thanks Cabintech!
For future readers, "tight" was maybe 15 degrees (think 30 minutes on a 12-hour analog clock). Also, pin 3 on the 3207 was about 3.8 when it was working. Thanks everyone!
What’s a tight range? I spent some time messing with it and found boundaries above and below which no sound went through. If I tried 20 evenly space positions, might I have overshot it?
Also, close to the clockwise limit of function, I might have heard a little bit of pulsing or warble that...
My issue seems similar to many others posted here but following their troubleshooting hasn't gotten me working. I built three at the same time and none are working. My V3207/V3102 came from eBay and might be bad but I didn't expect 3 out of 3 to be bad. Pics attached might help.
All units' Rate...
The indicator LEDs in Caesar Chorus don’t seem to be included in the BOM. There are spots on the PCB for them. Am I to assume that these are left to my choosing AND I need to add an appropriate resistor to the LED I pick? Or are those spots already set up for a particular LED value and I’m...