[sdiy] The Korg MS-20 VCO core is oscillating!

[David G. Dixon]

> You should have someone come in and break it. You never 
> really learn how something works until you have tried to 
> repair it a number of times. You learn the balance points of 
> every loop, the direction of every current... the meaning of 
> every diode...

I once troubleshot one of my own filter boards for someone over the phone.
I was pretty proud of myself, but maybe that doesn't count, since it was my
own circuit.