Lost audio output - Nommo Pro

Hey all, wondering if I could get some feedback here. I've had my Nommo Pro for about 4 months now, working fine, sound quality is excellent. Last night I turned on my speakers and noticed that I'm no longer getting audio output. The RGB is functioning and at least on the surface the speakers are functioning normally but no audio is coming out. I plug the speakers into my PC via USB 3.0, I've tried switching USB ports, swapping power outlets, plugging and re-plugging the cables into the sub-woofer but no luck so far. I plan on trying an optical cable in the morning. Any advice would be appreciated, thanks!