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CHAPTER 11 Troubleshooting
11-1. Troubleshooting
Before contacting service to service personnel, please check the followings first.
If you still have the same symptoms even after taking the following actions, contact your local dealer or qualified
service personnel.
1) TV-related Troubles
Unclear display or noisy sound
• Check whether TV antenna is correctly connected.
• Broadcasting may not be good in an area with bad reception or far away from a station/network.
No image
•
Check whether you connect the power cord properly. And press the POWER button.
Black background only
• Check whether the mode is set as PC monitor or Video/S-Video input, not TV mode.
Strips and shaking display
•
It may be interrupted by neighboring radio waves (please check any wireless phone, hair drier,
electric drilling machine and etc).
•
Execute fine tuning for manual adjustment.
Can’t catch a specific channel
•
Check whether channel setting is normally set.
•
Try to rotate an antenna’s direction.
Picture plays without sound
•
Try to press MUTE button.
•
Volume up by using VOL button.
2) PC Monitor-related Troubles
No image on the monitor
•
Check whether the D-Sub cable is firmly connected to the TV and a PC.
•
Check whether a graphic card is correctly inserted into the slot.
•
Check whether the power of a PC and the TV is on.
•
Check whether a graphic card or mode is set appropriately on a PC.
•
Referring to the Standard Signal Mode for PC monitor in the previous chapter, change graphic
mode.
•
Check whether the D-Sub cable pins are not inserted or bent.
No Power
•
Check whether the power cord is normally inserted and reconnect it.
•
Pull out the power cord from wall outlet and reconnect it in 10~20 minutes.
LED lamp turns off in red and it shows no image
•
Check whether the graphic cable is connected to the TV and a PC.
•
Check whether a computer is in power-saving mode and attempt to operated keyboard and
mouse.
Unstable or unfocused image or trembling
•
Check whether the D-Sub cable is connected to the TV and a PC.
•
If a PC display mode is changed, the screen needs readjusting, so you need to use Auto
Adjustment.
•
Check whether the TV and your graphic card are compatible each other and whether it is set as
an appropriate refresh rate. If letters look distorted, change the refresh rate to 60Hz.
Abnormal image scale
•
By using vertical/horizontal position in Picture Adjustment Menus, adjust the position.
•
Try to execute Auto Adjustment function.
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