Yamaha CS80

S-

I am having this same fault on a CS60. Will investigate further and  
try track down the fault.

AK
On 14/05/2011, at 12:15 AM, skkatter wrote:

> This reminds me, my CS60 is stuck in Sustain II mode even when the  
> switch is
> switched to Sustain I. I don't think the switch is at fault, is there
> anything specific on the SH card I should be checking?
>
> -S
>
> On 12 May 2011 22:48, lucidsound <lucidsound@...> wrote:
>
>>
>>
>> I understand that part of it, because in Sustain 1 the oscillator  
>> voltage
>> is held by the capacitor on the SH card, whereas in Sustain II, the  
>> key
>> assign is still connected to the oscillator.
>>
>> But it seems every one of these synthesisers I've ever worked on  
>> and that
>> includes the CS-60, has this problem of oscillator pitch drift when
>> releasing keys when using Sustain 1, some worse than others.
>>
>> My guess is leakage on the SH card caused by contamination, but I'd  
>> like to
>> hear other people's experiences.
>>
>> If you have a CS-60 or CS-80, select Sustain 1 and set up a long  
>> release
>> time, and see if the notes change in pitch during the release cycle.
>>
>> Lucid.
>>
>>
>> ----- Original Message -----
>> From: Laurie Curry
>> To: yamahacs80@yahoogroups.com
>> Sent: Thursday, May 12, 2011 9:40 PM
>> Subject: Re: [yamahacs80] Pitch Drop When Using Sustain 1
>>
>> the secret to understanding the sustain switches is this..... When  
>> you use
>> sustain 1 , the modulation sources and performance filters are  
>> interupted
>> from the oscillator once the key is lifted... you will have a long  
>> release,
>> by will not be able to pitch bend that hanging oscillator... so it  
>> is in a
>> non controlled state....
>> -----Original Message-----
>> From: "lucidsound" <lucidsound@...>
>> To: <yamahacs80@yahoogroups.com>
>> Date: 05/12/2011 13:34
>> Subject: [yamahacs80] Pitch Drop When Using Sustain 1
>>
>> Has anyone else come across the quirk whereby if using long release  
>> times
>> in Sustain Mode 1, the oscillator pitch drops slowly when the notes  
>> are
>> released? Switching to Sustain II brings the notes back to the  
>> correct
>> pitch.
>>
>> I figure this is something to do with the Keyboard SH card, and  
>> voltages
>> leaking away from the capacitors.
>>
>> Any suggestions or previous experiences of this problem welcome!
>>
>> Thanks,
>>
>> Lucid.
>>
>> [Non-text portions of this message have been removed]
>>
>> [Non-text portions of this message have been removed]
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
>
>
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Andrew Kirkby
(e) kirkbyte@...
(m) 0416 000 070