Samsung SAMTRON 78BDF User Manual

4. Turn off your monitor and reconnect the video cable; then turn on both your computer and the 

monitor.  
If your monitor screen remains blank after using the previous procedure, check your video 
controller and computer system; your monitor is functioning properly. 

  

If there is something wrong with the input signal, the message below appears on the screen 
or the screen goes blank although the power indicator LED is still on. The message may 
indicate that the monitor is out of scan range or that you need to check the signal cable. 
 

 

  

1. if there are any sub woofer speakers near the monitor, unplug and relocate the woofer 

to another room.  

2. Remove all electronic devices such as radios, fans, clocks and telephones that are 

within 3 feet (one meter) of the monitor.  

3. Degauss the monitor if any devices were removed from the area.  

  

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A monitor recreates visual signals received from the computer. Therefore, if there is trouble with 
the computer or the video card, this can cause the monitor to become blank, have poor coloring, 
noise, Video mode not supported, etc. In this case, first check the source of the problem, and 
then contact the Service Center or your dealer. 
 

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Judging the monitor's working condition  
If there is no image on the screen or a " 

" message comes up, disconnect the cable from the 

computer while the monitor is still powered on. 

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If there is a message coming up on the screen or if the screen goes white, this means the 
monitor is in working condition.  

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In this case, check the computer for trouble. 

 

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