Thanks Ken. I checked the resistor, and it's 22K. The cap is marked as 22nK63, but when I check it with the meter, it reads 37n. Seems wrong, no?
Also, the replacement pots I used are 10K audio taper.
Also, the replacement pots I used are 10K audio taper.
--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> Short of you having the wrong part installed, somewhere, I'm not sure what
> the problem would be. Connected the bases of the four transistors is a
> resistor. Should be 22k or even 18k. Th capacitor across the op anp should
> be 22n. If is possible it may be a 2n2 if you have one of the old boards.
>
> Ken
>
>
> >So I replaced the two Rate pots and still have the same problem, which is
> that the Rate pots don't start to do anything until 3/4 of the way through
> the turn. I'm not a troubleshooting wiz, so I could use some direction.
> >
> >Between these pots and the output are the pairs of 3904/3906's and the )74
> chip, and a handful of resistors; is one of these more likely to be causing
> the problem than the other? Is there a measurement I can take to..ehmm...get
> a clue?
> >
> >Thanks!
> >
> >
> >
> >--- In cgs_synth@yahoogroups.com, sasami@ wrote:
> >>
> >>
> >> >I'm still working on mine. The rise and fall rate pots don't have any
> >> effect until 3/4 of the way through the range. I know they are log. pots,
> >> but that doesn't seem right?
> >>
> >> No, that doesn't seem right!
> >>
> >> Ken
> >>
> >> >
> >> >
> >> >--- In cgs_synth@yahoogroups.com, liam cloyd <liamcloyd@> wrote:
> >> >>
> >> >> glad you are making progress! any way you could post some close up pics on
> >> >> muffs so i can see the orientation and parts etc.
> >> >>
> >> >>
> >> >> [Non-text portions of this message have been removed]
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> >------------------------------------
> >> >
> >> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >> >Yahoo! Groups Links
> >> >
> >> >
> >> >
> >> >
> >> _______________________________________________________________________
> >> Ken Stone sasami@ otherunicorn@
> >> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> >> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >>
> >
> >
> >
> >
> >------------------------------------
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >Yahoo! Groups Links
> >
> >
> >
> >
> _______________________________________________________________________
> Ken Stone sasami@... otherunicorn@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>