40 | Troubleshooting
Common problems
The following table provides general information about common monitor problems you might
encounter and the possible solutions.
Issue
Short
description
Possible solutions
No Video/Power
LED off
No picture
• 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
menu.
• If current HDMI version is 2.0, switch to 1.4.
No Video/Power
LED on
No picture or no
brightness
• Increase brightness and contrast controls through
the OSD.
• Perform monitor self-test feature check.
• Check for bent or broken pins in the video cable
port.
• Run the built-in diagnostics.
• Ensure that the correct input source is selected in
the
Input Source
menu.
Missing pixels or
Stuck pixels
LCD screen has
spots
• Power cycle. Turn the monitor and the computer
off, and then turn it on again.
• A pixel that is permanently off is a natural defect
that can occur in LCD technology.
• For more information about Dell Monitor Quality
and Pixel Policy, see Dell Support site at:
www.dell.com/support/monitors
.
Brightness
Problems
Picture too dim
or too bright
• Reset the monitor to factory settings.
• Adjust brightness and contrast controls through
OSD.
Safety Related
Issues
Visible signs of
smoke or sparks
• Do not perform any troubleshooting steps.
• Contact Dell immediately.
Intermittent
Problems
Monitor
malfunctions on
and off
• 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.
