Cgs synth

It may not be coming in through the power rails from outside, but rather
being introduced onto the power rails by the 4024 itself. The first thing to
do is to solder a 10uf to 100uf electro directly across the power pins of
the 4024. If this helps, disconnect pin 14 the 4024 from the positive rail,
and add 10 ohms between the power rail and pin 14. The added caps should
remain directly between pins 7 and 14.

Ken

>I'm having the EXACT same problem as described in the post below.
>Louis, did you fix the problem? I tried the suggestions in the
>follow-ups but they didn't help with this problem. I'm using LF356H
>made by National with these markings: H24XX.
>
> I'm putting it on the breadboard to see if I can work this out, but
>if you (or someone) already has a fix...I'd love to here it! Also,
>more suggestions and/or guesses would be helpful, too.
>
>Note: I swapped the 4052 with another brand and got no change. The
>LF356 are soldered in place so I haven't swapped them out yet. I only
>have one make of the 4024 so I can't swap that yet.
>
>
>Thanks,
>p.
>
>
>--- In cgs_synth@yahoogroups.com, Louis van Dompselaar <louis@...> wrote:
>>
>> Hi list,
>>
>> I'm running into some small problems with my ASR. It is working as it
>> should, apart from two things:
>>
>> First, the LF356 are running warm,
>> Second, the outputs step up and down by around 10mV in sync with pin
>12 of the 4024.
>> With no input, it steps between 90mV and 100mV.
>>
>> This stops if I pull out the clock, so it's not coming in through the
>> power rails. How can this signal
>> get into the outputs?
>>
>>
>> Louis
>>
>
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>

_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
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