LG 37LB5D Owner's Manual page 130

APPENDIX
The audio function does not work.
Picture OK & No sound
No output from one
of the speakers
Unusual sound from
inside
the product
There is a problem in PC mode. (Only PC mode applied)
The signal is out of range
(Invalid format)
Vertical bar or stripe on
background &
Horizontal Noise &
Incorrect position
Screen color is unstable
or single color
92
Press the VOL or VOLUME button.
■
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 unusual noise
■
when the product is turned on or off and does not indicate a fault with the
product.
Adjust resolution, horizontal frequency, or vertical frequency.
■
Check the input source.
■
Work the Auto configure or adjust clock, phase, or H/V position. (Option)
■
Check the signal cable.
■
Reinstall the PC video card.
■