Here is my problem, I have a surround sound system hooked up to my Samsung DLP 4663W, and I only get sound through my left speaker and middle speaker on whatever is hooked up to AV1. I tried hooking up my VCR, DVD player, and video games to this input (all using different wires) and I have the same problem. Everything works fine in all the other inputs( AV2, AV3, etc). AV1 is the only one doing this. All of the sound settings are the same for every input and I know I have everything plugged in correctly. Does anyone know what I can do. I hope my TV isn't broken already. I have already made sure all of my settings were the same for every input. I have SRS TSXT Off and MTS on Stereo.