I have an FBV Express MK2 and Spider 4 120 the pedal will no longer light when connected to amp. I tried new rj45 cables. USB works to imac, calibrates and will even update pedal and amp via monkey. Tried rolling back to factory defaults on both and updating back to latest on both. Tried powering amp off and on while connected. No lights or lcd display when pedal is only connected to amp, Anything I might be missing to get back up and jamming??