I have got a wierd one. To listen to Cable TV I am outputting the sound from TV to my Yamaha RXV 1400 via the TV out jacks. For some reason the sound will output only to the right main. Sometimes it starts OK and I can listen in surround for stereo or center for mono programs but it always swtiches at some point to right main. Once it's in that mode nothing short of turning the TV off will get it back to normal (even that doesn't work all the time) Any ideas on if its the TV or the AMP. DVD and radio is fine on the AMP and the using the TV speakers I get cable TV sound from both left and right but can't tell it's in stereo (Sony Wega 57" rear projection).