Dell S2721QSA User Manual page 72

Synchronization
Problems
Safety Related
Issues
Intermittent
Problems
Missing Color
Wrong Color
│
72 Troubleshooting
Screen is
scrambled or
appears torn
Visible signs of
smoke or sparks
Monitor
malfunctions on &
off
Picture missing
color
Picture color not
good
• Reset the monitor to factory settings.
• 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.
• 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.
• Change the settings of the Preset
Modes in the Color menu OSD
depending on the application.
• Adjust R/G/B value under Custom
Color in the Color menu OSD.
• Change the Input Color Format to
RGB or YPbPr in the Color menu
OSD.
• Run the built-in diagnostics.