Dell P2418HT User Manual page 50

Common
Symptoms
Geometric
Distortion
Horizontal/
Vertical Lines
Synchronization
Problems
Safety Related
Issues
Intermittent
Problems
Missing Color
Wrong Color
Image retention
from a static
image left on
the monitor for
a long period of
time
50 | Troubleshooting
What You Possible Solutions
Experience
Screen not • Reset the monitor to factory settings.
centered correctly • Auto Adjust via OSD.
• Adjust horizontal & vertical controls via OSD.
Screen has one or • Reset the monitor to factory settings.
more lines • Perform Auto Adjust via OSD.
• Adjust Phase and Pixel Clock controls via OSD.
• Perform monitor self-test feature check and determine
• Check for bent or broken pins in the video cable
• Run the built-in diagnostics.
Screen is • Reset the monitor to factory settings.
scrambled or • Perform Auto Adjust via OSD.
appears torn • Adjust Phase and Pixel Clock controls via OSD.
• Perform monitor self-test feature check to determine if
• Check for bent or broken pins in the video cable
• Restart the computer in safe mode.
Visible signs of • Do not perform any troubleshooting steps.
smoke or sparks • Contact Dell immediately.
Monitor • Ensure that the video cable connecting the
malfunctions on
& off
• Reset the monitor to factory settings.
• Perform monitor self-test feature check to
Picture missing • Perform monitor self-test.
color • Ensure that the video cable connecting the
• Check for bent or broken pins in the video cable
• Change the settings of the Preset Modes in the
Picture color
not good
• Adjust R/G/B value under Custom. Color in Color
• Change the Input Color Format to PC RGB or
• Run the built-in diagnostics.
Faint shadow • Use the Power Management feature to turn off
from the static
image displayed
appears on the • Alternatively, use a dynamically changing
screen
if these lines are also in self-test mode.
connector.
the scrambled screen appears in self-test mode.
connector.
monitor to the computer is connected properly
and is secure.
determine if the intermittent problem occurs in
self-test mode.
monitor to the computer is connected properly
and is secure.
connector.
Color menu OSD depending on the application.
menu OSD.
YPbPr in the Color menu OSD.
the monitor at all times when not in use (for more
information, see Power Management
screensaver.
Modes).