32" widescreen flat ilo tv

Your SAP audio function is on. Look on your remote or in the TV menu for SAP or MTS. There are 3 settings, Mono, Stereo, and SAP... set it to Stereo. I hope this was helpful, best wishes.

Apparently the TVGOS (TV Guide On Screen) signal on CBS stations (since the 6/12/09 digital changeover) can cause the sound to be missing on those channels. Use the SAP button on the remote to page through the SAP options. When you return to the normal setting the sound will be restored. This problem should not occur again unless the SAP button is pressed.

you need to reset the preferences on you sound icon in the menu panel

Had a similar issue and turns out I had accidentally switched my language pref to SAP rather than English. As soon as I changed it back, everything was fine...

Often a signal might experience a super-quick "drop" in signal strength, and the display is automatically adjusting the now weaker audio signal to "mono" (temporary, as for best quality). But the dropout is usually so brief you will then see the "stronger" signal restored [full strength], and now the audio is "stereo".

It's like a "bump" or "disturbance" that occasionally affects the cable/satellite/OTA (antennae) signal being fed into the TV, and your display's attempts to compensate for the weaker signal [going to mono, then back to stereo once back to full strength].
Connecting it to your cable directly (bypassing the box) or an antenna would give you a true over-the-air signal, which would be proper MTS and would not give you any more pop ups.

reset sound

Same here.....just bought the tv too..Let me know if you here anything.

If your TV is connected to a Comcast cable box that has a volume control on it with its on screen volume at the top of the picture. Turn it up until the word "stereo" appears and then only use the TV's volume control. This should fix the problem and allow you to enjoy stereo audio.

The mono/stereo is an indicator of the audio signal that the TV is outputing. Like most car radios, they have an indicator that tells you when a station in coming in clear, which may be just an LED or a light. When the signal is weak or when your on a non-stereo station the indicator will not be on. What signal are you providing to the TV? Cable, OTA, STB output??? low RF signal level could be the cause for this.

I have encountered the same problem. I have looked through the menu at least a hundred times to find an answer, but the only thing that I have been able to come up with is to push the MTS button on the remote.