Hi, recently my Pro-scratch 2, failed to work in FX mode, both: scratch & skid mode are no more effect, when i try to press the scratch wheel nothing...( no more touch sensitive action ) but the scratch wheel, work as a bend mode only,when i press the button the light work whell both red and green. i reset the unit corectly, and still the same problem, i double check de parameter, and the ground on the power cord. i work with 2 of this machine for 4 years in my basement, look like new. but for any reason wont work in touch mode. i read the manual many time try everything the said... still nothing, Could anybody have a idea ? shematic ? or a link ?

Thanks DJBRASS