LG DM2350D Owner's Manual page 113

ꕢ For analog broadcast, stereo is not clear or sound comes from one speaker
only.
• In a poor reception area (areas with weak or unstable signal) or if multi audio is
unstable, select
• Adjust the Balance
ꕢ TV sound is not in sync with the lips or the sound breaks up occasionally.
• If it occurs only with a certain TV channel, that station's broadcast signal may have
a problem. Check with the TV station or your cable operator.
Mono on Multi Audio.
with the Navigation Button.