50 | 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 at:http://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 at:http://www.dell.com/
support/monitors.
Brightness
Problems
Picture too dim
or too bright
• Reset the monitor to Factory Settings.
• Auto Adjust via OSD.
• Adjust brightness & contrast controls via OSD.
Geometric
Distortion
Screen not
centered
correctly
• Reset the monitor to Factory Settings.
• Auto Adjust via OSD.
• Adjust horizontal & vertical controls via OSD.
NOTE: When using DVI-D/DisplayPort input, the positioning
adjustments are not available.
Horizontal/
Vertical Lines
Screen has one
or more lines
• Reset the monitor to Factory Settings.
• Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• 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.
NOTE: When using DVI-D/DisplayPort input, the Pixel Clock
and Phase adjustments are not available.
Synchronization
Problems
Screen is
scrambled or
appears torn
• Reset the monitor to Factory Settings.
• Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• 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.
Intermittent
Problems
Monitor
malfunctions on
& off
• Ensure that the video cable connecting the monitor to the
computer is connected properly and is secure.
• Reset the monitor to Factory Settings.
• Perform monitor self-test feature check to determine if the
intermittent problem occurs in self-test mode.
