Alienware AW3420DW, User Manual

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Troubleshooting | 57
Common problems
The following table contains general information about common monitor
problems you might encounter and the possible solutions:
Common
symptoms
What you
experience
Possible solutions
No Video/
Power LED off No picture • Ensure that the video cable connecting the
monitor and the computer is properly connected
and secure.
• Verify that the power outlet is functioning
properly using any other electrical equipment.
• Ensure that the power button is depressed fully.
• Ensure that the correct input source is selected in
the Input Source menu.
No Video/
Power LED on No picture or no
brightness • Increase brightness and contrast controls in the
Brightness/Contrast menu.
• Perform monitor self-test feature check.
• Check for bent or broken pins in the video cable
connector.
• Run the built-in diagnostics.
• Ensure that the correct input source is selected in
the Input Source menu.
Poor Focus Picture is fuzzy,
blurry, or
ghosting • Eliminate video extension cables.
• Reset the monitor to factory settings.
• Change the video resolution to the correct
aspect ratio.
Shaky/Jittery
Video Wavy picture or
fine movement • Reset the monitor to factory settings.
• Check environmental factors.
• Relocate the monitor and test in another room.
Missing Pixels LCD screen has
spots • Cycle power On-Off.
• Pixel that is permanently off is a natural defect
that can occur in LCD technology.
• For more information on Dell Monitor Quality
and Pixel Policy, see Dell support site:
www.dell.com/support/monitors .
Stuck-on Pixels LCD screen has
bright spots
• Cycle power On-Off.
• Pixel that is permanently off is a natural defect
that can occur in LCD technology.
• For more information on Dell Monitor Quality
and Pixel Policy, see Dell support site:
www.dell.com/support/monitors .