Dell 2408WFP Monitor - Manual (Page 38)

Video Problems
l Verify that the power outlet is functioning properly using any other electrical
equipment.
l Ensure that the power button depressed fully.
No Video/ Power
LED on No picture
or no
brightness l Increase brightness & contrast controls via OSD.
l Perform monitor self-test feature check.
l Check for bent or broken pins in the video cable connector.
Poor Focus Picture is
fuzzy,
blurry, or
ghosting l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Eliminate video extension cables.
l Reset the monitor to Factory Settings.
l Change the video resolution to the correct aspect ration (16:10).
Shaky/Jittery
Video Wavy
picture or
fine
movement l Perform Auto Adjust via OSD.
l Adjust the Phase and Pixel Clock controls via OSD.
l Reset the monitor to Factory Settings.
l Check environmental factors.
l Relocate the monitor and test in another room.
Missing Pixels LCD screen
has spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD
technology.
Stuck-on Pixels LCD screen
has bright
spots l Cycle power on-off.
l Pixel that is permanently off is a natural defect that can occur in LCD
technology.
Brightness
Problems Picture too
dim or too
bright l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.
l Adjust brightness & contrast controls via OSD.
Geometric
Distortion Screen not
centered
correctly l Reset the monitor to Factory Settings.
l Auto Adjust via OSD.
l Adjust brightness & contrast controls via OSD.
NOTE: When using '2: DVI-D', the positioning adjustments are not
available.
Horizontal/Vertical
Lines Screen has
one or more
lines l Reset the monitor to Factory Settings.
l Perform Auto Adjust via OSD.
l Adjust Phase and Pixel Clock controls via OSD.
l Perform monitor self-test feature check and determine if these lines are also
in self-test mode.
l Check for bent or broken pins in the video cable connector.
NOTE: When using '2: DVI-D', the Pixel Clock and Phase
adjustments are not available.
Synchronization
Problems Screen is
scrambled
or appears
torn l Reset the monitor to Factory Settings.
l Perform Auto Adjust via OSD.
l Adjust Phase and Pixel Clock controls via OSD.
l Perform monitor self-test feature check to determine if scrambled screen
appears in self-test mode.
l Check for bent or broken pins in the video cable connector.
l Restart the computer in the safe mode.
Safety Related
Issues Visible signs
of smoke or
sparks l Do not perform any troubleshooting steps.
l Contact Dell immediately.
Intermittent
Problems Monitor
malfunctions
on & off l Ensure that the video cable connecting the monitor to the computer is
connected properly and is secure.
l Reset the monitor to Factory Settings.
l Perform monitor self-test feature check to determine if the intermittent
problem occurs in self-test mode.
Missing Color Picture
missing
color l Perform monitor self-test feature check.
l Ensure that the video cable connecting the monitor to the computer is
connected properly and is secure.
l Check for bent or broken pins in the video cable connector..
Wrong Color Picture color
not good l Change the Color Setting Mode in the Color Settings OSD to Graphics or
Video depending to the application.
l Try different Color Preset Settings in Color Settings OSD. Adjust R/G/B value
in Color Settings OSD if the Color Management is turned off.
l Change the Input Color Format to PC RGB or YPbPr in the Advance Setting
OSD.
Image retention
from a static
image left on the
monitor for a long
period of time Faint
shadow
from the
static image
displayed
appears on
the screen l Use the Power Management feature to turn off the monitor at all times
when not in use (for more information, see
Power Management Modes ).
l Alternatively, use a dynamically changing screensaver.