[AH] Odyssey VCO problem

[Mintlake at aol.com]

In a message dated 1/7/99 11:16:21 AM, bmcdonald at chyron.com wrote:

<<Well, I'm still trying to fix my Odyssey (model 2800) VCO problem
(problem being that VCO 2 will not scale and its frequency range is much
different from 20Hz-20kHz - seems like it goes to like 40kHz, although I
didn't measure this).  I brought it to a local tech (Thang Ho at
Musicians Service Center in San Jose), who couldn't determine the exact
problem, but suggested that it may be the CD4011 chip (a quad NAND gate)
or the 2N5459 FET.  >>

Have you made sure that the 2nd voice CV is behaving normal?  If there is a
component failure in the VCO circuit causing what I am interpreting your
symptom to be, it could be the charge cap (heart of the VCO).  

Larry Church