The Yamaha AN1x Synthesizer mailing list

--- In AN1x-list@yahoogroups.com, "Silent Android" <elson@...> wrote:
>
> I turned on my AN1x last night and for some reason all the D and Ab
> keys wouldn't sound. Eventually I whacked the thing around and kept
> hitting the keys hard and they came back. 
> 
> I'm thinking there's some chip or connection that's loose inside the
> AN1x that's causing this. Does anyone know where I can find it? Thanks.
>

Ed is right, open up your AN1x case and check the ribbon cable connections to the main 
board are all fastened tightly - this problem has been reported on AN1x-list on more than 
one occasion. The same trouble has been known to affect the Ribbon Controler too. Good 
luck.

Jon