Common Problems; To Run Built-In Diagnostics - Dell U2414H User Manual

To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Unplug the video cable(s) from the back of the computer or monitor. The monitor
then goes into the self-test mode.
3. Press and hold Button 1 and Button 4 on the front panel simultaneously for 2
seconds. A gray screen appears.
4. Carefully inspect the screen for abnormalities.
5. Press Button 4 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, white and text
screens.
The test is complete when the text screen appears. To exit, press 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.

Common Problems

The following table contains general information about common monitor problems you
might encounter and the possible solutions:
Common
Symptoms
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
What You
Experience
• 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 via the
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 via the
Source
• Eliminate video extension cables.
• Reset the monitor to Factory Settings.
• Change the video resolution to the correct aspect ratio.
• Reset the monitor to Factory Settings.
• Check environmental factors.
• Relocate the monitor and test in another room.
Possible Solutions
menu.
menu.
Troubleshooting
Input
Input
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