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VCO troubleshooting
MUFF WIGGLER Forum Index -> Oakley Sound Systems  
Author VCO troubleshooting
jean_schön
Everything is working great except that the sawtooth output is only about 2 volts peak to peak, while the rest of the ouputs are 10 volts peak to peak.
And, i assume related to this, is that there is no pulse output when PWM type is set to edge, no signal. I have checked all the wiring which is correct. any ideas?
Synthbuilder
Probably the gain setting resistors around U5b (pins 5, 6, 7). So check the values of R61 and R63. Possibly also R59, R62, R64 and R65.

Tony
jean_schön
Synthbuilder wrote:
Probably the gain setting resistors around U5b (pins 5, 6, 7). So check the values of R61 and R63. Possibly also R59, R62, R64 and R65.

Tony


Thanks, R62 was 10K instead of 1K. that solved it!
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