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Cgs synth

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Message

cgs65 cv issues

2007-12-05 by prophei

hello all,

for the life of me, i can not get any response whatsoever from anything on the cgs65 that is
related to control voltage. this includes the 2 pots that connect there and the cv input.

i get audio through the audio input and out that is affected by the control pot there.

i have tried rechecking all of my solder points, tried swapping out the lm358 for another,
tried replacing the trimmer... and i am just not sure where else i best look. any suggestions
regarding the critical points to check?

given that nothing works down there, must the issue be between pin 1 of the lm358 and the
5pin of the tube?

thanks!

-michael

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