Vintage Synth Repair

At 21:09 Uhr -0500 06.07.2009, Scott S. wrote:

> Still further, the CV input jack seems to have something stuck in it.
> From my limited knowledge of CV, I think the keyboard is disconnected
> if it is being operated by CV (not the case on this one). I don't know
> if that could contribute to some of these symptoms, I will remove it
> to rule that out.

Did you remove it, whatever it was?

Next step: Measuring the output of the CV out. We need to narrow it down to
the section that is reponsible for the issue. Perhaps it is the DAC,
perhaps it is the oscillator itself.

The voltage change at the CV out should be 1 volt for each octave. How do
things look at this point?

-- 
Malte Rogacki gacki@...
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"Don't forget to TURN ON THE SYNTHESIZER. Often this is the reason why you
 get no sound out of it." (ARP 2600 Owner's Manual)
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