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13. Troubleshooting
Board fails to work normally
Remote control failure
1. Check whether there are other objects between remote control and television remote control receiving
window, blocking signal transmission and thus leading to failure of remote control.
2. Check whether the battery terminal in the remote control is correctly connected.
3. Check whether remote control needs battery replacement.
Device automatically
shuts down
1. Check whether the sleep function is set or not.
2. Check whether there has been a sudden power outage.
3. Check whether there is no signal automatic shutdown.
PC mode
Signal out of range
1. Check whether display is set correctly.
2. Check whether resolution is the best resolution.
3. Adjust line and field synchronization in menu.
Background has
vertical lines or streaks
1. Select automatic correction in menu.
2. Adjust clock and phase position in menu.
Image lack of color,
color is incorrect
1. Check whether VGA is not securely connected or has a quality problem.
2. Adjust color and brightness or contrast in menu.
Display format that is
not supported
1. Select automatic correction in menu.
2. Adjust clock and phase position in menu.
Touch Function
Touch function invalid
1. Check whether touch driver is installed and started.
2. Check whether the size of article touched is comparable with finger.
Touch positioning not
correct
1. Check whether driver is properly installed and make correction.
2. Check whether touch using finger or stylus is facing the screen.
Video Malfunctions
No picture and no sound
1. Check whether the device is in active mode.
2. Check whether the signal wire is plugged in securely, using the corresponding INPUT.
3. If in internal computer mode, check whether internal computer is running.
With horizontal or
vertical stripes or
image distortion
1. Check whether signal wire is securely connected.
2. Check whether other electronic equipment or power tools are placed around the device.
No color, color is weak
or image is weak
1. Adjust color and brightness or contrast in menu.
2. Check whether signal wire is securely connected.
Audio Malfunctions
Image but no sound
1. Check whether mute button is pressed for mute.
2. Press VOL. + / - to adjust volume.
3. Check whether audio line is connected correctly.
Only one speaker has
sound
1. Adjust sound balance in menu.
2. Check whether computer sound control panel only sets up one sound channel.
3. Check whether audio line is connected correctly.
VGA output without
sound
1. Check whether an external device is connected with headphone cable.
