Diagnose LCD Problems

 

 

 

Instructions

1. 1
   Turn on the LCD monitor and your computer. If the monitor will not turn on, check the power cable connection to the electrical outlet and to the back of the monitor. An amber light should be on when the device is powered on, even if the video signal is absent. If the amber light is not turning on, unplug the monitor and replace the power cable, then press the "Power" button on the monitor to turn it on again.
   
2. 2
   Check the video cable connection on the back of the monitor and computer. If the amber light is lit up on the front of the monitor, then a lack of display may indicate a problem with the video cable. Unplug each end of the video cable and reconnect it, then turn the monitor off and on again. If there is still no image displaying, replace the video cable or attempt to use the monitor with another computer to determine if the computer's video card is the problem.
   
3. 3
   Reset the auto-resize function on the monitor. Press the "Menu" button on the monitor and locate the "Auto-Resize" tool. Click "OK" to run the tool, which will configure the vertical and horizontal display for optimal viewing.
   
4. 4
   Turn off your computer and monitor and check the video cable plug if horizontal or vertical lines appear on the screen. Turn the computer and monitor on again. If this does not fix the problem, there is a hardware issue with your video card or monitor. Test the LCD monitor on another computer. If the lines are still displayed, replace the LCD monitor. If not, replace the video card in the original computer.
   
5. 5
   Monitor the time it takes for the image to appear after you power on the monitor. If it takes more than a few seconds, the backlight (the light source behind the liquid crystal display) is beginning to malfunction and will cease being operable in the near future. This symptom is sometimes accompanied by a darkening in the corners of the screen, or on only one side of the screen, when the monitor is on. Typically, the backlight is not a serviceable part and the LCD monitor must be replaced.
   
6. 6
   Download the "LCD Fix" or "JScreenFix" utilities to fix dead or stuck pixels. You will require the Flash plugin or Java for your browser to run these online tools. Click "Fix My Screen" or "Launch JScreenFix" to launch each online tool and press "F11" to make the browser window full screen. Allow the tools to run for several minutes. If the pixel(s) remain dead or stuck, replace the monitor.