I installed a innofader pro on my vestax 002xl mixer, and have this hum that I cannot get rid of. I've tried a hum x, and could'nt get rid of the problem. Weird thing is when I switch from master, to cue the hum goes away. it's also not the charger connection from laptop. It seems to be the actuall mixer itself, if any of you that have messed with the insides of a mixer, can please help! Thanks!