LG 15LC1RB Owners Manual - Page 33

Troubleshooting Checklist The audio function 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 • Adjust Balance in menu option. Unusual sound from inside the product • 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. 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 it whether the signal cable is connected or loose. • Check the input source. Vertical bar or stripe on background & Horizontal Noise & Incorrect position Screen color is unstable or single color • Work the Auto configure or adjust clock, phase, or H/V position. (option) • Check the signal cable. • Reinstall the PC video card. 33