Yamaha CS80

Hi everybody,

I have recently purchased JH's CS-80. However this machine requires
some fixing. While I have access to a qualified service engineer, I
would appreciate some feedback, hints, tips from you guys before I
give it to him.

1)Suboscillator does not work: no matter what waveform selected, there
is no modulation on either VCO, VCF or VCA. Speed does not do
anything. As a consequence the corresponding aftertouch features do
not work either.  Routing Noise to the parameters mentioned above does
result in (some) effect. Any ideas?

2)One of the keys always at max: it seems that one of the keys always
produces maximum velocity, no matter how it is hit.

3)Only the top two thirds of the ribbon controller work (somehow):
when I touch the velvet, it almost feels as if the bottom third were
not existing. Can ribbon controllers be fixed at all (or replaced?)

4)Kenton Midi Kit: have the kit and want to have it installed, any
tips from your side?

Thank you so much for some feedback
Peter

Im pretty sure Kent spong.. our very own CS80 guru can fix the CS80 
ribbons.. give him a shout.. you can get his number link from the RL Music 
website .. 

> There used to be some info on how to build your own ribbon controller on the PAiA website, this might help finding a solution how to fix it. The only other solution I could think of would be gutting a YC45D organ for its ribbon controller alone. The 45D has got exactly the same ribbon as the CS80, a YC30´s wouldn´t work. 
> 
> Hope that helps, 
> 
> Stephen. 
> 
> ____________________________________________________________________ 
> 
> "Ambition makes you look pretty ugly, kicking squealing Gucci little piggy." (Thom Yorke/Radiohead -- "Paranoid Android")  
> 
> Finally available: Stephen Parsick -- Traces of the Past Redux, reissued with three previously unreleased bonus tracks. For more info please check www.parsick.com 
> 
> For legal downloads please check: 
> 
> http://www.musiczeit.com/directory.php?artist=296&title=Stephen+Parsick 
> 
> 
>   ----- Original Message ----- 
>   From: slipperysoles 
>   To: yamahacs80@...m 
>   Sent: Wednesday, November 19, 2008 11:26 AM
>   Subject: [yamahacs80] CS-80 Fixes 
> 
> 
>   Hi everybody, 
> 
>   I have recently purchased JH's CS-80. However this machine requires
>   some fixing. While I have access to a qualified service engineer, I
>   would appreciate some feedback, hints, tips from you guys before I
>   give it to him. 
> 
>   1)Suboscillator does not work: no matter what waveform selected, there
>   is no modulation on either VCO, VCF or VCA. Speed does not do
>   anything. As a consequence the corresponding aftertouch features do
>   not work either. Routing Noise to the parameters mentioned above does
>   result in (some) effect. Any ideas? 
> 
>   2)One of the keys always at max: it seems that one of the keys always
>   produces maximum velocity, no matter how it is hit. 
> 
>   3)Only the top two thirds of the ribbon controller work (somehow):
>   when I touch the velvet, it almost feels as if the bottom third were
>   not existing. Can ribbon controllers be fixed at all (or replaced?) 
> 
>   4)Kenton Midi Kit: have the kit and want to have it installed, any
>   tips from your side? 
> 
>   Thank you so much for some feedback
>   Peter 
> 
>  
> 
>     
> 
> [Non-text portions of this message have been removed] 
>

There used to be some info on how to build your own ribbon controller on the PAiA website, this might help finding a solution how to fix it. The only other solution I could think of would be gutting a YC45D organ for its ribbon controller alone. The 45D has got exactly the same ribbon as the CS80, a YC30´s wouldn´t work.

Hope that helps,

Stephen.

____________________________________________________________________

"Ambition makes you look pretty ugly, kicking squealing Gucci little piggy." (Thom Yorke/Radiohead -- "Paranoid Android") 

Finally available: Stephen Parsick -- Traces of the Past Redux, reissued with three previously unreleased bonus tracks. For more info please check www.parsick.com

For legal downloads please check:

http://www.musiczeit.com/directory.php?artist=296&title=Stephen+Parsick

  ----- Original Message ----- 
  From: slipperysoles 
  To: yamahacs80@yahoogroups.com 
  Sent: Wednesday, November 19, 2008 11:26 AM
  Subject: [yamahacs80] CS-80 Fixes


  Hi everybody,

  I have recently purchased JH's CS-80. However this machine requires
  some fixing. While I have access to a qualified service engineer, I
  would appreciate some feedback, hints, tips from you guys before I
  give it to him.

  1)Suboscillator does not work: no matter what waveform selected, there
  is no modulation on either VCO, VCF or VCA. Speed does not do
  anything. As a consequence the corresponding aftertouch features do
  not work either. Routing Noise to the parameters mentioned above does
  result in (some) effect. Any ideas?

  2)One of the keys always at max: it seems that one of the keys always
  produces maximum velocity, no matter how it is hit.

  3)Only the top two thirds of the ribbon controller work (somehow):
  when I touch the velvet, it almost feels as if the bottom third were
  not existing. Can ribbon controllers be fixed at all (or replaced?)

  4)Kenton Midi Kit: have the kit and want to have it installed, any
  tips from your side?

  Thank you so much for some feedback
  Peter



   

[Non-text portions of this message have been removed]

slipperysoles wrote:
> 3)Only the top two thirds of the ribbon controller work (somehow):
> when I touch the velvet, it almost feels as if the bottom third were
> not existing. Can ribbon controllers be fixed at all (or replaced?)
>   
As Rob wrote, Kent sells a replacement spring for the ribbon. I replaced 
one of these for a CS80 owner a few months ago and it made it like new!

 David

Thank you. I will contact Kent.

Cheers
Peter
--- In yamahacs80@yahoogroups.com, David Rogoff <david@...> wrote:
>
> slipperysoles wrote:
> > 3)Only the top two thirds of the ribbon controller work (somehow):
> > when I touch the velvet, it almost feels as if the bottom third were
> > not existing. Can ribbon controllers be fixed at all (or replaced?)
> >   
> As Rob wrote, Kent sells a replacement spring for the ribbon. I
replaced 

> one of these for a CS80 owner a few months ago and it made it like new!
> 
>  David
>

--- In yamahacs80@yahoogroups.com, "slipperysoles" <slipperysoles@...>
wrote:
>
 him.
> 
> 1)Suboscillator does not work: no matter what waveform selected, there
> is no modulation on either VCO, VCF or VCA. Speed does not do
> anything. As a consequence the corresponding aftertouch features do
> not work either.  Routing Noise to the parameters mentioned above does
> result in (some) effect. Any ideas?

Bad VCO chip?  Looks like IC5 on the SUB board:
http://d.yimg.com/kq/groups/13287191/or/1278022767   Easy to check
with a 'scope (if you bought a CS80 you should/must pick up a $50 used
oscilloscope) or even an audio amp if the speed is set high.

>> 1)Suboscillator does not work: no matter what waveform selected, there
>> is no modulation on either VCO, VCF or VCA. Speed does not do
>> anything. As a consequence the corresponding aftertouch features do
>> not work either.  Routing Noise to the parameters mentioned above does
>> result in (some) effect. Any ideas?
>
>Bad VCO chip?  Looks like IC5 on the SUB board:
http://d.yimg.com/kq/groups/13287191/or/1278022767   

That's my guess also. 

JH.