Check the 22k trimmer to the sine and saw/sine section is set.
If that isnt' it, make sure you are getting a 5V sawtooth. Check the resistors around the area if you are not, in particular those associated with the 311 and the output TL072.
KenIf that isnt' it, make sure you are getting a 5V sawtooth. Check the resistors around the area if you are not, in particular those associated with the 311 and the output TL072.
On Fri, Mar 13, 2015 at 5:09 PM, Stephen Richards okayjustalittle@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:Hi KenI have a CGS VCO that is not giving any output on the Saw to Sine and a very quiet output on the Sine out.Where else should i start looking ? CA3140 ?It's not the LM3900 , or BC547 is swapped those out already.
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