LG RZ-23LZ25 Series Owner's Manual page 37

Troubleshooting Checklist
• Press the VOL (or Volume) button.
Picture OK &
• Sound muted? Press MUTE button.
No sound
• Try another channel. The problem may be with the broadcast.
• Are the audio cables installed properly?
No output from one
• Adjust Balance in menu option.
of the speakers
Unusual sound
• A change in ambient humidity or temperature may result in an unusual
from inside the noise when the product is turned on or off and does not indicate a fault with
product
the product.
• Adjust resolution, horizontal frequency, or vertical frequency.
The signal is out of
• Check it whether the signal cable is connected or loose.
range.
• Check the input source.
Vertical bar or
stripe on back-
• Work the Auto configure or adjust clock, phase, or H/V position.
ground &
Horizontal Noise &
Incorrect position
• Check the signal cable.
Screen color is
• Reinstall the PC video card.
unstable or single
color
The audio function does not work.
There is a problem in PC mode.
(Only PC mode applied)
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