APPENDIX

The audio function does not work.

Picture OK & No sound

No output from one

of the speakers

Unusual sound from

inside

the product

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.

APPENDIX

There is a problem in PC mode. (Only PC mode applied)

The signal is out of range

Adjust resolution, horizontal frequency, or vertical frequency.

Check the input source.

(Invalid format)

 

Vertical bar or stripe on

 

background &

Work the Auto configure or adjust clock, phase, or H/V position. (Option)

Horizontal Noise &

 

Incorrect position

 

Screen color is unstable

Check the signal cable.

or single color

Reinstall the PC video card.

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LG Electronics 3377LLBB55DD, 3377LLBB44DD Check the input source, Check the signal cable, Reinstall the PC video card