LG Electronics 4270, 60PG60, 5270 The audio function does not work, The signal is out of range

The audio function does not work.

Picture OK & No sound

No output from one

of the speakers

Unusual sound from inside the product

No sound

when connecting

HDMI/USB

■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.

■Check HDMI cable over version 1.3.

■Check USB cable over version 2.0.

■Use normal MP3 file.

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.

APPENDIX

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