I just noticed that I am not getting center channel output from my 5es. The cable/speaker is ok, if I switch it to one of my fronts, the center speaker plays ok. If I go to speaker setup, center is set to no and I cannot change it (because it can't detect anything)? I was moving the receiver around to a new stand and didn't disconnect the speaker wires and I remember the center wire was a bit tight when moving. It seems hard to belive though that any internal connection would get affected by pulling on the wire? I have banana plugs. I tried taking the bananas off and just using the wire but no luck either. Any ideas? I hate to take it to the shop with no backup!