Common Problems - Dell P2422HA User Manual

Common problems

The following table contains general information about common monitor problems
you might encounter and the possible solutions:
Common
Symptoms
No Video/power
LED off
No Video/power
LED on
Poor focus
Shaky/jittery
video
Missing pixels
Stuck-on pixels
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62 Troubleshooting
Possible Solutions
• 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 pressed.
• Ensure that the correct input source is selected in the
Source menu.
• Increase brightness and contrast controls using the 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
Source menu.
• Eliminate video extension cables.
• Reset the monitor to Factory Settings (Factory Reset).
• Change the video resolution to the correct aspect ratio.
• Reset the monitor to Factory Settings (Factory Reset).
• Check environmental factors.
• Relocate the monitor and test in another room.
• 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.
• 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.
Input
Input