LNB46750 LCD TV lost audio.

I have a Samsung LN46B750 LCD TV that is still under warranty. The sound quit working. The unit has been performing just fine for almost a year. Video is still fine but the only sound is the chimes that still sound as usual when the TV is turned on or off.Cable input is from a Comcast cable box. Control is by the Comcast remote.What steps should I go through to determine and fix the problem? Any help is appreciated.Thanks.

Reply 1 : LNB46750 LCD TV lost audio.

Check whether the Sound has not been switched to external speakers. this setting can be found in the sound menu make sure the TVs speakers are turned on, and not External Speakers.