XDJ- RX2 EQ knobs CUTTING IN AND OUT

Left EQ H/MID/LOW shorting out/ cutting out/ or no reaction when turned whatsoever. Levels coming in at different sounds, sensitive to turning the knob and/or when you tap down on it, it seems to activate the knobs but immediately come back out once you released, same with when turned. 

I took the machine apart, wiggled and cleaned, it corrected for about 2 weeks and the left column is out again.