So I bought a used amp from an audio store on eBay and the amp works fine. I've been trying to get the PLC2 knob to work but every time i switch the "remote punch level" button to the ON the amp will stop working, the blue light is still ON on the amp and on the PLC2 knob. Its a Rockford Fosgate Punch P1000X1BD amp and I do have the correct PLC2 knob. please any suggestions.
