C2D Can´t change presets or drawbar on Swell

[lorenzonardocci]

Hi.
Please, I started my C2D after a while and something weird is happening.
As soon I change to presets 1-2 or 3 on the Swell, so it goes on drawbar B and stay there all the time!!
I can´t change to drawbar A, or to any of each presets. Preset´s lights er flashing all the time and I can´t stop them.
What does it meas?
Looks like drawbar B button i fast down...like I am always pushing it down.
OR does anyone experience something like that?
What can I do?
Thanks!

[maxpiano]

Hi, probably that button is malfunctioning and needs to be fixed or replaced.

There are some recent discussions on how to do it, if I find one I'll post the link here.

EDIT: here it is post156372.html