Common Problems - Dell P2418HT Simplified Service Manual

Common Problems

The following table contains general information about common monitor problems you
might encounter and the possible solutions:
Common What You
Symptoms Experience
No Video/Power No picture
LED off
No Video/Power No picture or no
LED on brightness
Poor Focus Picture is fuzzy,
blurry, or ghosting
Shaky/Jittery Wavy picture or
Video fine movement
Missing Pixels LCD screen has
spots
Stuck-on Pixels LCD screen has
bright spots
Brightness Picture too dim
Problems or too bright
5. Trouble Shooting Instructions
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 depressed fully.
• Ensure that the correct input source is selected in
the Input Source
• Increase brightness & 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
• 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.
• 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.
• 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.
• 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:
http://www.dell.com/support/monitors.
• Reset the monitor to factory settings.
• Auto Adjust via OSD.
• Adjust brightness & contrast controls via OSD.
menu.
menu.