MOTM

I originally tried to post this query to synth-diy, but haven't had any
luck.  My apologies for being off-topic.  (I will be patching this into
my MOTM system though.)  The second oscillator in my Solus is spanning
far out of range across only a couple of keys.  That is C is a set of
low frequency clicks, C# in the low audio range, D a couple of octaves
up, and D# practically out of hearing range.  If anyone has a quick
ideas (even a hunch) as to the culprit, I would appreciate it.  Or, if
someone knows of a place to find the schematic online please email me
offlist.  Many Thanks.

Dave Moylan