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6. Trouble Shooting Instructions
Stuck-on Pixels
LCD screen has
bright spots
Brightness
Picture too dim or
Problems
too bright
Geometric
Screen not
Distortion
centered correctly
Horizontal/
Screen has one or
Vertical Lines
more lines
Synchronization
Screen is
Problems
scrambled or
appears torn
Safety Related
Visible signs of
Issues
smoke or sparks
• Cycle p ower 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.
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust brightness & contrast controls
via OSD.
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust horizontal & vertical controls
via OSD.
• When using HDMI/DisplayPort input,
the positioning adjustments are not
available.
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust the 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.
• When using HDMI/DisplayPort input,
the Pixel Clock and Phase
adjustments are not available.
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust the 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.
• Do not perform any troubleshooting
steps.
• Contact D e ll immediately.
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