Deep

Thank you for your suggestions. Yes, I have yamaha 675 and I made sure that subwoofer is set to on. The gain nob is turned to something like 80% way. I tested the cable with another subwoofer and it worked fine. In fact what I noticed is, the subwoofer correctly switches to ON mode when I am playing music on Auto setting. I removed the amp and did not notice anything wrong. No signs of burns or loose connections. I will take out woofer and see what happens. I am pretty sure its something with subwoofer because I connected other subwoofer in place and it worked fine.

I bought R-10SW about 4 years back. It used to work fine. But few days back I noticed that there is no sound coming out of it. It turns on fine. The green light in front turns on. But I tried everything. No sound is coming out of it. What are my options to troubleshoot it?