Yamaha CS80

Probably the old CMOS inside going belly up...  Digital IC's in the CS-80 use 1970's lithography.  You have about 10-20 year lifespan.  

Replace these chips with newly manufactured parts and you have potentially 100's if not 1000's of years.  My CS-80 has a partially functioning Bank 2 (dead lower 2 octaves) and any repair that gets the instrument working doesn't last long.  Aftertouch is flakey too.

So starting a video series showing a complete electronic restoration of my CS-80 and wanted to share with others.  Will become important as  a way to free these machines from constant service.  First video is in on youtube: "Saving the CS-80".

The complexity and part count of this machine is overwhelming.

Sincerely,
Gavin

--- In yamahacs80@yahoogroups.com, "Rescio" <alessandrorescio@...> wrote:
>
> hmmm.  the voices of bank I of my cs80 just went silent (altough some of them give a beep), bank II operates just fine. 
> 
> I already was planning a service fresh up, including kenton midi install, but now i'm going to speed things up.
> 
> Does someone know what might happen here?
> 
> thanks for helping,
> 
> regards,
> 
> Alessandro
>