Cgs synth

--- In cgs_synth@yahoogroups.com, Tom Adam <tom.adam@...> wrote:
>
> Howdy,
>
> I've just recently finished my Sequential Switch and have noticed
> something strange.
> It seems like it's counting OK, but the led of step 6 never comes
up and
> the output voltage at step 6 is 0.
> I checked polarity of the led and that's OK.
> Also when I turn the pots fully cw, step 7 gives only 5V instead
of 7V
> on all the other steps.
> Checked resistor values, looks good too.
>
> Any thoughts?
>
> --
> Tom Adam
> The Big Ear
> http://users.pandora.be/the-big-ear/
> Check out the download section!
>

>hi
>have you tried replacing the transistor?
>andrew
>
>
>
>--- In cgs_synth@yahoogroups.com, Tom Adam <tom.adam@...> wrote:
>>
>> Howdy,
>>
>> I've just recently finished my Sequential Switch and have noticed
>> something strange.
>> It seems like it's counting OK, but the led of step 6 never comes
>up and
>> the output voltage at step 6 is 0.
>> I checked polarity of the led and that's OK.
>> Also when I turn the pots fully cw, step 7 gives only 5V instead
>of 7V
>> on all the other steps.
>> Checked resistor values, looks good too.
>>
>> Any thoughts?
>>
>> --
>> Tom Adam
>> The Big Ear
>> http://users.pandora.be/the-big-ear/
>> Check out the download section!
>>
>
>
>
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>
>
>
>

> My Guess - If you have used an LM358 anywhere, replace it with a TL072.
>
> Some 358 are so slow that the counter can jump several steps - and it is
> always the same steps too.

> have you tried replacing the transistor?