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Yamaha CS80

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Re: Voicecard issues

2010-08-29 by Ron

Mike,
 Breaking the connections to the voice card would kill the voice. Regardless, I probably just had the bad misfortune to 
have a failure after moving the instrument. Regarding the resistor swap: I am sure you know that the 60 card is not a direct drop in replacement for the 80. The tuning of a 60 will be off by an octave if you don't change the resistors in question. Of course you still have to tune the board in question.
I'm not looking to sell either the voicecard or the chips; they belong to the new owner anyway.
I have a few owners as well as a few good techs helping out but thanks for the offer.
After leaving the instrument on for several hours some of the problems have resolved themselves...no more portamento :)
However there is what I'm assuming to be a scaling issue: voice 8 mix 1 ( the problem child) sounds approximately a whole step below pitch on the first octave on the keyboard, nearly in tune on the second octave, approximately a half step above pitch on the third octave etc for the fourth and fifth octaves. This is on the 2 foot setting..
Thanks for listening....RJ

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