Dell S3423DWC User Manual page 62

Common
Symptoms
Stuck-on pixels
Brightness problems • Reset the monitor to factory settings (Factory Reset).
Geometric distortion • Reset the monitor to factory settings (Factory Reset).
Horizontal or vertical
Lines
Synchronization
problems
Safety-related issues • Do not perform any troubleshooting steps.
Intermittent
problems
62 │ Troubleshooting
Possible Solutions
• 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:
www.dell.com/support/monitors
• Adjust brightness & contrast controls using OSD.
• Adjust horizontal & vertical controls using OSD.
• Reset the monitor to factory settings (Factory Reset).
• 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 (Factory Reset).
• Perform monitor self-test feature check to determine if
the 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.
• 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 (Factory Reset).
• Perform monitor self-test feature check to determine if
the intermittent problem occurs in self-test mode.