then its probably in audio output amp stage. try this. turn volume up to max. put your ear up very close to one of the speakers. listen. can you hear a "hiss" noise??? if so its probably in audio preamp or switching. if no hiss is heard its probalby in power amp stage. luck

that was the first thing I tried they're on, I used to repair tv, radio when they used glowing transistors( tubes) and still restore tube radios , I guess it stays in your blood. I got out when transistors got in , wish I'd stayed in longer but with some direction I should be able to bring some words back to my sony I went and bought va new sony a 50" lcd very nice, but they have a elderly care center near me that could use my old sony if I can restore it's voice. they can't afford a new tv and their old one needs major work so I told them this is theirs once I get it working . I'm not going to put alot in it to give it away , I don't need it since I already replaced itso i'll tinker a little while before it goes to big sony haven in nthe sky! Thanks for trying to help, I really appreicate it, but my wife is already nagging me to put it out for trash, I just thought it was a common problem like the old days!!!Thanks Jerry

best advise i can give you is go into the setup menue scroll down to audio functions click on here and see if "speakers" is on or off.