Users Guide

70 | Troubleshooting
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/pixelguidelines.
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/pixelguidelines.
Brightness
Problems
Picture too dim
or too bright
• Reset the monitor to factory settings.
• Adjust brightness and contrast controls in
the
Brightness/Contrast menu.
Geometric
Distortion
Screen not
centered
correctly
• Reset the monitor to factory settings.
Horizontal/
Vertical Lines
Screen has one
or more lines
• Reset the monitor to factory settings.
• Perform monitor self-test feature check
and determine if these lines are also in self-
test mode.
• Check for bent or broken pins in the video
cable connector.
• Run the built-in diagnostics.
Synchronization
Problems
Screen is
scrambled or
appears torn
• Reset the monitor to factory settings.
• Perform monitor self-test feature check to
determine if the scrambled screen appears
in self-test mode.
• Check for bent or broken pins in the video
cable connector.
• Restart the computer in the safe mode.
Safety Related
Issues
Visible signs of
smoke or
sparks
• Do not perform any troubleshooting steps.
• Contact Dell immediately.