Cgs synth

Check the voltages around the 4051. Make sure it has it's ground and -Ve
voltages.

Ken

> Ok So I pulled the 4051 out and the output stoped. So its not the output
>buffer. I changed the 4051 for another one and the problem is back. I
>checked the orientation of all the diodes and transistors and they all look
>good. Im stumped.
>
>On 2/9/07, sasami@... <sasami@...> wrote:
>>
>> The caps were to stop the op-amps oscillating, should that have been the
>> case. It apparently wasn't.
>>
>> Pull out the 4051 if it is in a socket. The output should drop to zero. if
>> it doesn't, the problem is with the output buffer and the circuitry around
>> that - such as the mix input being fed a high voltage or a short
>> somewhere.
>>
>> If it does make a difference, the problem is either the 4051 itself, or an
>> error around it.
>>
>> Ken
>>
>>
>>
>
>
>[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@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>