Dell P2720DCc User Manual page 68

Missing Color
Wrong Color
Image retention from
a static image left
on the monitor for a
long period of time
Video Ghosting or
Overshooting
68 │ Troubleshooting
∞ 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 Color Setting Mode in the Color Settings
OSD to Graphics or Video depending on the application.
∞ Try different Preset Modes in Color settings OSD.
Adjust R/G/B value in Custom Color in Color settings
OSD.
∞ Change the Input Color Format to RGB or YPbPr in
the Color settings OSD.
∞ Run the built-in diagnostics.
∞ Set the screen to turn off after a few minutes of screen
idle time. These can be adjusted in Windows Power
Options or Mac Energy Saver setting.
∞ Alternatively, use a dynamically changing screensaver.
∞ Change the Response Time in the Display OSD to
Fast or Normal depending on your application and
usage.