[terry and jo]

Cummins,

On our 2010, we have a Sony STR-DH500 model. I lost my sub-woofer some time back and got it back by using the A.F.D button to change to "Multi St" and it came back. If I remember right, I think I had even lost my back speakers at the same time, but I don't remember that for sure.

Point is, try different "settings" with different buttons on the receiver that may even slightly appear to be related to sound output.

Terry