Dell IN2020M appendix Common Problems

Dell IN2020/IN2020M Flat Panel Monitor User's Guide

For OSD-related issues, see OSD Warning Messages.

Common Problems

The following table contains general information about common monitor problems that you might encounter and the possible solutions.

Common Symptoms	What You Experience
No Video/Power LED off	No picture
No Video/Power LED on	No picture or no brightness
Poor Focus	Picture is fuzzy, blurry, or ghosting
Shaky/Jittery Video	Wavy picture or fine movement
Missing Pixels	LCD screen has spots
Stuck-on Pixels	LCD screen has bright spots
Brightness Problems	Picture too dim or too bright
Geometric Distortion	Screen not centered correctly
Horizontal/Vertical Lines	Screen has one or more lines
Synchronization Problems	Screen is scrambled or appears torn

Safety Related Issues	Visible signs of smoke or sparks
Intermittent Problems	Monitor turns on & off

Missing Color Picture lacks color

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.

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.

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 (16:9).

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. Run the built-in diagnostics.

Cycle power on-off.

Pixel that is permanently off is a natural defect that can occur in LCD technology. Run the built-in diagnostics.

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.

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 scrambled screen appears in self-test mode.

Check for bent or broken pins in the video cable connector. Restart the computer in the safe mode.

Do not perform any troubleshooting steps.

Contact Dell immediately.

Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.

Reset the monitor to Factory Settings.

Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.

Perform monitor self-test feature check.

Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.

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

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