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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?
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.
No output from
one of the
speakers
• Adjust Balance in menu option.
Screen color is
unstable or
single color
• Check the signal cable.
• Reinstall the PC video card.
The signal is out
of range.
There is a problem in PC mode.
(Only PC mode applied)
• 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
• Work the Auto configure or adjust clock, phase, or H/V position. (option)