4.Carefully inspect the screen for abnormalities.

5.Touch the button 4 key on the front panel again. The color of the screen changes to red.

6.Inspect the display for any abnormalities.

7.Repeat steps 5 and 6 to inspect the display in green, blue, black, and white colored screens.

The test is complete when the white screen appears. To exit, touch the button 4 again.

If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card and computer.

OSD Warning Messages

For OSD-related issues, see OSD Warning Messages.

Common Problems

The following table contains general information about common monitor problems you might encounter.

Common Symptoms

No Video/Power LED off

No Video/Power LED on

What You Experience

No picture

No picture or no brightness

Possible Solutions

Ensure that the video cable connecting the monitor and the computer is properly conne

Verify that the power outlet is functioning properly using any other electrical equipment

Ensure that the power button is depressed fully.

Increase brightness & contrast controls via OSD.

Perform monitor self-test feature check.

Check for bent or broken pins in the video cable connector.

Ensure that the correct input source is selected via the Input Source Select button.

Run the built-in diagnostics.

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 (16:10).

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

Stuck-on Pixels

Brightness Problems

Geometric Distortion

Horizontal/Vertical Lines

LCD screen has spots

LCD screen has bright spots

Picture too dim or too bright

Screen not centered correctly

Screen has one or more lines

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: suppor

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: suppor

Reset the monitor to Factory Settings.

Auto Adjust via OSD.

Adjust brightness & contrast controls via OSD.

Reset the monitor to Factory Settings.

Auto Adjust via OSD.

Adjust brightness & contrast controls via OSD.

NOTE: When using 'DVI-D', the positioning adjustments are not available.

Reset the monitor to Factory Settings.

Perform Auto Adjust via OSD.

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Dell U2711 appendix Common Problems, Common Symptoms, What You Experience, Possible Solutions