[sdiy] Ideas on resonance problem on single OB-Xa voice

[Michael E Caloroso]

> I'm not that good at reading schematics.

Please do not try to fix this yourself.  Stop right now and take it to
a competent repair tech.  Too many of these wonderful vintage
synthesizers have been destroyed by incompetent repair jobs and repair
techs are starting to refuse botched DIY repair jobs.  A repair job
like this is seldom trivial and cannot be fixed over the internet.  If
you cannot grasp complex systems such as polyphonic analog synths or
correctly interpret a schematic, you will do more damage and your
repair bill will be higher.  The circuits have many complex
interactions.  A problem can be deceptive and may actually have
another cause somewhere else.  Complex systems need complex tools.  A
DMM is going to tell you little.  Oscilloscopes and other test
instruments are not easy tools to use and it is easy to use them the
wrong way.  "Professional driver" disclaimer...

There's a reason these things are labeled NO USER SERVICEABLE PARTS INSIDE.

MC