Dell U2415 User Manual page 60

Missing Pixels LCD screen has
spots
Stuck-on Pixels LCD screen has
bright spots
Brightness Picture too dim
Problems or too bright
Geometric Screen not
Distortion centered
correctly
Horizontal/ Screen has one
Vertical Lines or more lines
Synchronization Screen is
Problems scrambled or
appears torn
Safety Related Visible signs of
Issues smoke or sparks
Intermittent Monitor
Problems malfunctions on
& off
Missing Color Picture missing
color
Wrong Color Picture color not
good
60
| Troubleshooting
• 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: http://www.dell.com/
support/monitors.
• 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: http://www.dell.com/
support/monitors.
• Reset the monitor to factory settings.
• Adjust brightness & contrast controls via OSD.
• Reset the monitor to factory settings.
• Adjust horizontal & vertical controls via OSD.
• Reset the monitor to factory settings.
• 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.
• 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 Color menu
OSD.
• Change the Input Color Format to PC RGB or YPbPr in the
Color menu OSD.
• Run the built-in diagnostics.