Dell P2722H User Manual page 69

Common What You
Symptoms Experience
Stuck-on Pixels LCD screen has
bright spots
Brightness Picture too dim
Problems or too bright
Geometric Screen not
Distortion centered
correctly
Horizontal/ Screen has one
Vertical Lines or more lines
Synchronization Screen is
Problems scrambled or
appears torn
Safety Related Visible signs of
Issues smoke or sparks
Possible Solutions
• 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 PixelPolicy, see Dell Support site at:
www.dell.com/pixelguidelines.
• Reset the monitor to factory settings (Factory
Reset).
• Adjust brightness and contrast controls via OSD.
• Reset the monitor to factory settings.
• Auto Adjust through OSD.
• Adjust horizontal & vertical controls via OSD.
• 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.
• 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 safe mode.
• Do not perform any troubleshooting steps.
• Contact Dell immediately.
Troubleshooting | 69