Great to hear you've got it working!
I know from my own experiences how much heartache troubleshooting a PCB can cause.
Cheers
Dean
I know from my own experiences how much heartache troubleshooting a PCB can cause.
Cheers
Dean
--- In cgs_synth@yahoogroups.com, A S wrote:
>
> Thanks to Dean and Ken for helping me get my VCS issue resolved. Ken, that
> 22pF cap was the culprit! Thanks for spotting that.
>
> I noticed that the Exp/Lin switches don't have an effect unless the CV
> pots are at something other than zero. Even with no external CV plugged in.
> That looks to be correct according to the schematic.
>
> Anyway, now I want another VCS! Great module!
>
> Thanks again for taking the time to help a lost soul. :-)
>
> Andrew
>
>
>
> On Tue, Feb 12, 2013 at 12:55 AM, wrote:
>
> > **
> >
> >
> > I looked at the photos.
> >
> > Looks like a 22pF where you should have a 22nF (0.022uF) next to TL072.
> > Other side of TL072 - pin 7 resistor should be 8k2, not 22k as marked on
> > the
> > PCB.
> >
> > Ken
> >
> >
> > __________________________________________________________
> > Ken Stone sasami@... otherunicorn@...
> > Modular Synth PCBs for sale http://www.cgs.synth.net/>
> > Australian Miniature Horses & Ponies http://www.blaze.net.au/~sasami/>
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>