I have had a Russound AH484 A-Bus system for over a year now. It was all working fine until recently. All of a sudden now I can hear all the input sources are playing to all the channels. So the only way I can listen anything clearly is when I can turn off all the inputs except one. I have not changed or tweaked anything recently.

I have turned off the power for a day or so to see if any reset would work. I have tried to swap the inputs to the AH484, but to no avail.

Any help on troubleshooting this will be greatly appreciated.

It sounds like the hub needs repair. If you bought it from an authorized source - and the hub is less than 2 years old, it should be covered under warranty.

Looks like I am out of luck. The hub seem to have been purchased in Oct 06, so It's out of warranty now. I may have to shop around for a new hub. I assume there is no other thing I can check.