Troubleshooting
                   Check List    |    Q & A    |    Self-Test Feature Check

Before calling for service, check the information in this section to see if you can remedy any problems yourself. If you do need assistance, please call the phone number on the warranty card, the phone number on the Information section or contact your dealer.

No images on the screen. I cannot turn on the monitor. Is the power cord connected properly? Check the power cord connection and supply.
Can you see "No Connection, Check Signal Cable" on the screen? Check the signal cable connection.
If the power is on, reboot the computer to see the initial screen(the login screen), which can be seen. If the initial screen (the login screen) appears, boot the computer in the applicable mode (the safe mode for Windows 98/95) and then change the frequency of the video card.
(Refer to the Preset Display Modes)

Note: If the initial screen (the login screen) does not appear, contact a service center or your dealer.

Can you see "Sync. Out of Range" on the screen? You can see this message when the signal from the video card exceeds the maximum resolution and frequency that the monitor can properly handle.

Adjust the maximum resolution and frequency that the monitor can properly handle.
There is no image on the screen. Is the power indicator on the monitor blinking at 1 second intervals? The monitor is in PowerSaver mode.

Press a key on the keyboard or move the mouse to activate the monitor and restore the image on the screen.
I cannot see the On Screen Display. Have you locked the On Screen Display (OSD) Menu to prevent changes? Unlock the OSD by pressing the MENU button for at least 10 seconds.
The image on the screen is shaking. Check the monitor configuration to see if it is in Interlace Mode. (Interlace Mode: Vertical frequency 43Hz, 87Hz(i), etc) The signal from the video card exceeds the maximum resolution and frequency of the monitor.
Are there any magnetic products such as a power adapter, speaker or a high voltage wire near by? Move the monitor away from anything that can create a strong magnetic field.
Is the voltage stable? The screen image can appear to shake or vibrate at a particular time of day due to low supply voltage.
The screen image can also appear to shake or vibrate if there is a problem with the video card or the computer's main board.
The screen shows strange colors or just black and white. Is the screen displaying only one color as if looking at the screen through a cellophane paper? Check the signal cable connection.

Make sure the video card is fully inserted in it's slot.
Have the screen colors become strange after running a program or due to a crash between applications? Reboot the computer.
Has the video card been set properly? Set the video card by referring to the video card manual.
The screen suddenly has become unbalanced. Have you changed the video card or the driver? Adjust screen image position and size using the OSD.
Have you adjusted the resolution or frequency to the monitor? Adjust the resolution and frequency at the video card.
(Refer to the Preset Display Modes).
The screen can be unbalanced due to the cycle of the video card signals. Readjust Position by referring to the OSD.
The screen is out of focus or OSD cannot be adjusted. Have you adjusted the resolution or frequency on the monitor? Adjust the resolution and frequency of the video card.
(Refer to the Preset Display Modes).
The screen is partially distorted. Are there any magnetic products such as an adapter, speaker or a high voltage wire near the monitor? Enter the OSD and perform a "Degauss".

Keep the monitor away from any magnetic products.
LED is blinking but no images on the screen. Is the frequency properly adjusted when checking the Display Timing on the menu? Adjust the frequency properly by referring to the video card manual and the Preset Display Modes.

(The maximum frequency per resolution may differ from product to product.)
There are only 16 colors shown on the screen. The screen colors have changed after changing the video card. Have the Windows colors been set properly? For Windows 98(95):
Set the colors properly at the Control Panel, Display, Settings.

For Windows 3.1:
Adjust the colors of the screen using the VGA utility provided by the video card.

Has the video card been set properly? Set the video card by referring to the video card manual.
There is a message that reads "Unrecognized monitor, Plug & Play (VESA DDC) monitor found". Have you installed the monitor driver? Install the monitor driver according to the Driver Installation Instructions.
See the video card manual to see if the Plug & Play (VESA DDC) function can be supported. Install the monitor driver according to the Driver Installation Instructions.


Check the following items if there is trouble with the monitor.
  1. Check if the power cord and the cable are properly connected to the computer.
  2. Check if the computer beeps more than 3 times when booting.
    (If it does, request an after-service for the main board of the computer.)
  3. If you installed a new video card or if you assembled the PC, check if the installed the adapter(video) driver and the monitor driver.
  4. Check if the scanning ratio of the video screen is set at 75Hz or 85Hz.
    (Do not exceed 60Hz when using the maximum resolution.)
  5. If you have problems in installing the adapter (video) driver, boot the computer in Safe Mode, remove the Display Adapter at the "Control Panel, System, Device Administrator" and then reboot the computer to reinstall the adapter (video) driver.
Note:  If problems repeatedly occur, contact an authorized service center.