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Voicecard issues

2010-08-27 by ron joseph

Recently I sold my beloved CS80. After moving it I gave it ( what I thought would be) one last check and found a dead voice. We ahd two possible repair choices: trouble shoot the existing voice acrd or drop in a CS60 voicecard that we had just swapped the resistors in order to get the right tuning. We chose the second path. The voicecard functions but the pitch slides into place similar to a very slow portamento. I vaguely recall someone on the list having a similar issue. I'm stumped....anyone have any ideas? I'd rather not pull the card and try to fix the original voicecard if possible. Thanks in advance for any help; and a special thanks to several of you who are already involved in my mini drama....Ron

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Re: Voicecard issues

2010-08-28 by Mike

Voices don't just "die" when you move the keyboard. Swapping resistors will not get you the "right" tuning. Do you have any test equipment available? I'll walk you through the whole thing over the phone for an IG00152.

If you're in the Midwest U.S.A., I can help you out. I will repair both of your voice cards and tune/calibrate them to factory specs.

On another note, I'll buy the CS80/60 voicecard off of you. Or, if you want to sell the IG00152 chip off of one of the cards, I'll buy that instead.

-Mike

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--- In yamahacs80@yahoogroups.com, ron joseph <ronsravioli@...> wrote:
>
>
> Recently I sold my beloved CS80. After moving it I gave it ( what I thought would be) one last check and found a dead voice. We ahd two possible repair choices: trouble shoot the existing voice acrd or drop in a CS60 voicecard that we had just swapped the resistors in order to get the right tuning. We chose the second path. The voicecard functions but the pitch slides into place similar to a very slow portamento. I vaguely recall someone on the list having a similar issue. I'm stumped....anyone have any ideas? I'd rather not pull the card and try to fix the original voicecard if possible. Thanks in advance for any help; and a special thanks to several of you who are already involved in my mini drama....Ron
>
>
> [Non-text portions of this message have been removed]
>

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

Sent from my iPhone

Re: Voicecard issues

2010-08-30 by Mike

Thanks anyway. Good luck.

-Mike

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--- In yamahacs80@yahoogroups.com, Ron <ronsravioli@...> wrote:
>
> 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
>
> Sent from my iPhone
>