The audio 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.

No sound

Check HDMI cable over version 1.3.

 

 

 

when connecting

Check USB cable over version 2.0.

 

HDMI/USB

Use normal MP3 file.

*This feature is not available for all models.

 

 

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

The signal is out of range

Vertical bar or stripe on

background &

Horizontal Noise & Incorrect position

Screen color is unstable

or single color

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.

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LG Electronics 55LH55, SAC33601903, 37LH55, 37LH40 Picture OK & No sound No output from one Speakers, Use normal MP3 file