DaveRave

This is odd. All of a sudden my subwoofer is not working. Sometimes I can hear a faint rumbling, then nothing.. the sound bar is fine.. The light behind the sub is solid blue. I have tried unplugging from outlet, factory reset, unplugging from back of sub, unplugging hdmi cable behind satellite box.. The soundbar is wall mounted hasn't been touched. The unit is approx 6 years old.