Vintage Synth Repair

Yes, they are quite rare. I hardly find the II on ebay. I have already
considered to midify that thing but right now it would bust my budget,
so I would rather like to put some cv/gate inputs on it, if someone
would show me how to do that and then later use a somewhat affordable
midi/cv converter. I kinda hoped to some cheap mods such as putting a
wire here, add a pot there and exchange this or that cap and resistor
to jazz things up. I still want to funk up the LFO. It would be so
nice to have one or two extra controls to get a much steeper, faster,
slower modulation. I just don't know how to approach this. I'm so bad
at reading circuit boards but I managed to do some minor repairs on
another synth though. I still believe it should be possible to let the
vco modulate vcf by bridging their paths with a wire somehow.  
--- In vintagesynthrepair@yahoogroups.com, Jez <jezosaurus@...> wrote:
>
> I used to have a CS01 and I deeply regret having let it go. The PWM
> Bass is simply awsome. If that really is a Mk2 you've got, then that
> is quite a rare beast.
> 
> I would midi it up using a Kenton Midi -> CV interface. This would
> give you control over the oscillator (=> pitch/LFO) and leave the LFO
> for the filter.
> 
> Common mod for a Mk1 was to replace the resonance switch with a pot,
> giving more control and more extreme resonance. But the Mk2 has this
> already.
> 
> On 10/28/06, P........ <phd76er@...> wrote:
> > I've got this olde yamaha cs01 which is functional but in a bad shape
> > - no case, just bare electronics. It's a wonder that this thing works
> > at all. I would like to make a new case for it and also seize the
> > opportunity to make some modifications on it but I need some advice on
> > what's possible to do and what not, so here's what I wanna do:
>