I finally decided to connect my 47LS4500 to my stereo using an optical digital converter to conventional RCA jacks.  I've tried everything on my TV and nothing works.  I have verified that the cable and converter are good since I tried it on my sanyo TV to a different stereo.  No problem.  I even downloaded and ran the latest software update for the TV.  Any help would be appreciated.
				
			
				
		