Dell S2722DZ - Common Problems and Solutions

72 | Troubleshooting
Common problems
The following table contains general information about common monitor problems you
might encounter and the possible solutions:
Common
symptoms
What you
experience
Possible solutions
No video/
Power LED off
No picture •Ensure that the video cable connecting the
monitor and the computer is connected
properly and secure.
•Verify that the power outlet is functioning
properly using any other electrical equipment.
•Ensure that the power button is pressed fully.
•Ensure that the correct input source is
selected in the Input Source menu.
No video/
Power LED on
No picture or no
brightness
•Increase brightness and contrast controls
through 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 menu.
Missing pixels LCD screen has
spots
•CyclepowerOn-Off.
•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 https://www.dell.com/pixelguidelines.
Stuck-on pixels LCD screen has
bright spots
•CyclepowerOn-Off.
•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 https://www.dell.com/pixelguidelines.
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.