Yamaha CS80

Thanks a lot for your advise Ted !
I'm guess I should do it a good cleaning then you are right. Even if it is tuned, I need to know how to do it 'cos one day ...

Again thanks for your help !!!

Julien



--- In yamahacs80@yahoogroups.com, "T.M. Bois" <bucklehorse@...> wrote:
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> The first thing I would check is the tuning pot for that voice. Â I have a couple in my CS80 that are *very* fussy, in that moving them just a little bit causes the voices to go significantly out of tune.
> Commonly, all of the tuning pots will move slightly as the synth heats up (and cools down). Â This usually will result in a slight change in pitch across all of the voices. Â But if one of the voices has a dirty or fussy pot, it might change more drastically than the others when it gets warm.
> That said--it's just an educated guess. Â I would find out which voice is being problematic, then open up the CS50 (while it's warm) and try to adjust that trim pot on the voice card. Â If the pitch jumps wildly when you turn it, you've found your problem. Â With luck, a little bit of gentle turning back and forth will get the dust/dirt out and make it a bit more stable.
> It's definitely worth your time to learn how to tune that thing regardless. Â It's basic maintenance, and not terribly difficult.
> -Ted
> --- On Sat, 6/25/11, jdelgoulet <jdelgoulet@...> wrote:
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> From: jdelgoulet <jdelgoulet@...>
> Subject: [yamahacs80] CS50 weird tuned problem ... ?
> To: yamahacs80@yahoogroups.com
> Received: Saturday, June 25, 2011, 3:39 PM
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>       HI all, 
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> THis is my first post in this group ...
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> I'm the proud owner of a CS50 that causes me troubles...
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> When I play it everything is fine the first 60 minutes, then sometimes (yes sometimes not always), I get one voice going out of tune ....
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> I did a test today, and I've been able to play around 1h30 until one voice went out of tune.
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> I turn off the machine then switch it on again, the problem disappeared ...
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> Any idea where the problem might be ?
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> Thanks for your help !
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> Julien
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