I need some assistance as I'm out of ideas. I recently noticed that my velodyne dps-12 was no longer outputting any sound, after checking connections, cables and settings I've come to the conclusion that my receiver must be faulty. I tapped on my RCA cable and my sub responds, I also hooked it up to my bluray player and played a cd which produced bass. When running mcacc setup on my Pioneer it does not output test tones to my sub, I of course have my sub on and speakers set to small, crossover at 80. Everything worked fine for two years and all other speakers and hdmi outs are all functioning normal. Is it possible that just the sub output went bad? Seems so unlikely. I'd appreciate any ideas before I start looking for repair centers. Thanks.