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18
Video Function Can’t Work Normally
Audio Function Can’t Work Normally
Situation
Solution
No picture and no sound
• Check whether the machine is started state.
• Check whether signal wire is well plugged, whether INPUT is
corresponding to it.
• If in internal computer mode, check whether internal computer is started.
With horizontal or vertical stripes
or image dithering
• Check whether signal wire is well connected.
• Check whether other electronic equipment or power tools are placed
around the machine.
No color, color is weak, or image
is weak
• Adjust chromaticity and brightness or contrast in menu.
• Check whether signal wire is well connected.
Situation
Solution
With image but without sound
• Check whether mute button is pressed for mute.
• Press VOL + / - to adjust volume.
• Check whether audio line is connected correctly.
Only one speaker has sound
• Adjust sound balance in menu.
• Check whether computer sound control panel only sets up one
sound channel.
• Check whether audio line is connected correctly.
HDMI output without sound
• Check whether connect external device.
Simple Troubleshooting