Dell U3821DW 37.5" 21:9 Curved IPS Monitor (Silver) - Manual (Page 76)

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Troubleshooting
Synchronization
Problems Screen is
scrambled or
appears torn • 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.
Safety Related
Issues Visible signs of
smoke or sparks • Do not perform any troubleshooting
steps.
• Contact Dell immediately.
Intermittent
Problems Monitor
malfunctions on &
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.
Missing Color Picture missing
color • 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.
Wrong Color Picture color not
good • Change the settings of the Preset
Modes in the Color menu OSD
depending on the application.
• Adjust the R/G/B values under
Custom Color in Color menu OSD.
• Change the Input Color Format to
RGB or YPbPr in the Color menu
OSD.
• Run the built-in diagnostics.