I bought a new unit in April of 2013. (I guess there is no guarantee. I do not know)
Switch (between EXP 1 and EXP-2) works!
It does not work the volume change, etc. (up down).
I know how to assign the expression pedal different things.
Calibration does not help. (does not work)
1 and 2 photos of my unit, and 3 photo found on the Internet. (I was not able to photograph large)
Maybe I need to replace the PCB (assembly)? where to buy it ???
I would be grateful for your help !!!