LG 42LC7D Owner's Manual (English) - Page 81

Picture OK & No sound, Sound muted? Press MUTE button.

Page 81 highlights

The audio function does not work. Picture OK & No sound I Press the VOL or VOLUME button. I Sound muted? Press MUTE button. I Try another channel. The problem may be with the broadcast. I Are the audio cables installed properly? No output from one of the speakers Unusual sound from inside the product I Adjust Balance in menu option. I 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. There is a problem in PC mode. (Only PC mode applied) The signal is out of range I Adjust resolution, horizontal frequency, or vertical frequency. I Check the input source. Vertical bar or stripe on background & Horizontal Noise & Incorrect position Screen color is unstable or single color I Work the Auto configure or adjust clock, phase, or H/V position. (Option) I Check the signal cable. I Reinstall the PC video card. APPENDIX 79

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APPENDIX
79
There is a problem in PC mode. (Only PC mode applied)
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.
The signal is out of range
Screen color is unstable
or single color
Vertical bar or stripe on
background &
Horizontal Noise &
Incorrect position
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.
Picture OK & No sound
Unusual sound from
inside
the product
No output from one
of the speakers
The audio function does not work.