Quadrovibe lamp doesn't turn off

[Blues Healer]

Howdy,
I built a Quadrovibe ... the bypass works, the LED works, and flashes in time with the speed knob, but the lamp doesn't cycle off, ergo ... no effect

anyway, does anyone have any suggestions? from reading the build docs, my next guess would be to take a look at trying different values in R16 & 17.
another thing is that when I first adjusted the trimmers, I had to get the Chop close to all the way up before the lamp fired.
one other thing I should mention is that I used an ON/ OFF/ ON DPDT for the switch... I'm gonna put in an ON/ ON in a couple of days, when I get the part

thanks for your help!

[midwayfair]

Howdy,
I built a Quadrovibe ... the bypass works, the LED works, and flashes in time with the speed knob, but the lamp doesn't cycle off, ergo ... no effect

anyway, does anyone have any suggestions? from reading the build docs, my next guess would be to take a look at trying different values in R16 & 17.
another thing is that when I first adjusted the trimmers, I had to get the Chop close to all the way up before the lamp fired.
one other thing I should mention is that I used an ON/ OFF/ ON DPDT for the switch... I'm gonna put in an ON/ ON in a couple of days, when I get the part

thanks for your help!

The switch is limited to the audio path.

Are you getting varying voltages anywhere in the LFO?

Check R22 -- are you SURE you used a 47 Ohm resistor and not a 47K?

[Blues Healer]

thanks Jon
R22 - and 20 and 21 next to it -- are correct

I'll do another voltage check.