LG Electronics 50PK5**, 50PX9***, 50PK9***, 50PK7*** owner manual Appendix, 182

APPENDIX

The audio function does not work.

Picture OK & No

sound

No output from one

of the speakers

Unusual sound from

inside the TV

No sound when con- necting HDMI or USB

■Press the + or - 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 TV is switched on or off and does not indicate a fault with the TV.

■Check HDMI cable is High Speed HDMI Cable.

■Check USB cable over version 2.0.

*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

(Invalid format)

Vertical bar or stripe on

background &

Horizontal Noise & Incorrect position

Screen colour is unstable or single colour

■Adjust resolution, horizontal frequency, or vertical frequency.

■Check the input source.

■Use Auto configure or adjust clock, phase, or H/V position. (Option)

■Check the signal cable.

■Reinstall the PC video card.

There is a problem with PICTURE settings.

When the user chang- es the picture settings, the TV automatically converts back to the initial settings after a certain period of time.

■It means that the TV is currently set to Store Demo mode. To switch to Home use mode you should do the followings:

From the TV Menu, choose OPTION -> Choose Mode Setting -> Choose Home use. Now, you have completed switching to the Home use mode.

APPENDIX

182

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