So I have an old Genesis 900 subwoofer that was handed down to me. It sounds great with music, but unfortunately it has a persistent buzz. I've done a lot of googling, and I feel like I've tried just about every troubleshooting step I've read. I thought I would give the question one more shot here. This is also complicated by the fact that the remote that controls the subwoofer's settings doesn't seem to work anymore. Important points:
-The buzz continues even when the audio signal is disconnected
-I have tried different power cables
-I have tried different power outlets, included one that the receiver is connected to and one not
-I have tried removing all other devices connected to the outlet except the subwoofer
-I have tried a 3 to 2 pronged power adapter
Is there anything I'm missing? Anyone else have this subwoofer and have this issue? Is it worth trying to get it repaired, and if so who repairs subwoofers?