Roland KC550 Amp Keyboard "kc 550" Questions

...KC-550) The general Gain it's not responding. The output signal is very very low and very noisy. Thank for attention Enrico Fiorini Sounds like you have a poor or open ground if the loud noise is ...

...kc 550 will not power on. Hello, if it does not power up, then it means its having a power problem. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power ...