Dell P2722H - Common Problems

68 | Troubleshooting
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 via
OSD.
•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
•Perform Auto Adjust via OSD.
•Adjust the Phase and Pixel Clock controls via
OSD.
•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
•Perform Auto Adjust via OSD.
•Adjust the Phase and Pixel Clock controls via
OSD.
•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 at:
www.dell.com/pixelguidelines.