Are you connected using digital outputs and inputs? Have you checked all of your menu settings (sources and receiver) and selected dolby digital. Is the media (DVD, broadcast, etc) a 5.1 source?
Connected via S-Video and Optial Audio. Problem is not getting any sound from Rear Left/Right and Center.
Was getting 5.1 sound before I hooked up the DVD Recorder. Now only getting sound from Front Left/Right Speakers. Will check the A/V receiver settings.