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
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
>