Yamaha CS80

Hello

On 06.11.17 06:32 , virusindigo2@... [yamahacs80] wrote:
> 2. I notice after getting the synth home and playing it for awhile, 
> that intermittent random bad notes would happen when playing the keys. 
> It doesn't seem to matter what keys and it seems to happen randomly... 
> ie after a few minutes or after 20 minutes.
> .
>
Sounds like  a voice getting out of tune.

Might be a bad trimmer, but more likely a VCO chip dying.

I recommend to add a LED to each voicecard, with which you can detect, 
which voice is used: http://www.florian-anwander.de/yamaha_cs60/
Touching the trimmers for the tuning is another method, but it is quite 
tiring.

I am sure you will finde the culprit soon.

Florian


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