LG M237WAP Owner's Manual page 66

APPENDIX
The Audio function is not working
Picture OK &
No sound
No output from one
of the speakers
Unusual sound from
inside the TV
Picture ok & No sound
NO image appear.
Do you see an "OUT
OF RANGE" message
on the screen?
66
■ Press the VOL ◄ or ► (or -
■ Sound muted? Press MUTE button.
■ Try another channel. The problem may be with the broadcast.
■ Are the audio cables installed properly?
■ Adjust Balance in menu option.
■ A change in ambient humidity or temperature may result in an unusu-
al noise when
■ the TV is switched on or off and does not indicate a fault with the TV.
■ Check whether volume is "0".
■ Check sound muted.
■ HDMI cable installed properly.
■ Head phone cable installed properly.
■ Check sound format. Not supply to bitstream and compressed sound
format.
■ This message appears when the signal from the PC(video card) is out
off horizontal or vertical frequency range of the display. See the '
Product Specifications' section of this manual and configure you dis-
play again.
+) button.