LG 37LH255H User Manual - Page 92
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APPENDIX The audio does not work. Picture OK & No sound ■ 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? No output from one of the speakers Unusual sound from inside the product ■ 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 when connecting HDMI or USB ■ Check HDMI cable over version 1.3. ■ Check USB cable over version 2.0. ■ 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 ■ Adjust resolution, horizontal frequency, or vertical frequency. ■ Check the input source. Vertical bar or stripe on background & Horizontal Noise & Incorrect position ■ Work the Auto configure or adjust clock, phase, or H/V position. (Option) Screen color is unstable ■ Check the signal cable. or single color ■ Reinstall the PC video card. Power No Power ■ See troubleshooting flow chart. Erratic Operation Installer menu setup ■ Adjust Installer menu settings as required. Software Problems Cannot direct enter chan- ■ After 2-5-5 + MENU, only channels included in TV controller will appear. If chan- nel number or "No Signal" nel is available it can be added to channel scan, rescan channels. If it is not avail- appears able, the 'No Signal' message appears on the TV screen. ! NOTE G For other problems not caused by the TV, refer to other devices' operating guides. APPENDIX 90