Product-Specific Problems; Possible Solutions - Dell Pro 55 Plus User Manual

Common symptoms
Missing Color
Wrong Color
Image retention from a
static image left on the
display for a long period
of time

Product-specific problems

Table 28. Product-specific problems
Specific symptoms
The screen image is too
small
Cannot adjust the
monitor with the joystick
No Input Signal when
user controls are pressed
The picture does not fill
the entire screen
No image when using
USB Type-C connection
to computer, laptop, and
so on
No charging when using
USB Type-C connection
to computer, laptop, and
so on
Intermittent charging
when using USB Type-C
connection to computer,
laptop, and so on
What you experience

Possible solutions

•
Picture missing color
•
•
•
Picture color not good
•
•
•
•
Faint shadow from the
static image displayed
appears on the screen
•
What you experience Possible solutions
•
Image is centered on
screen, but does not fill
•
entire viewing area
•
OSD does not appear on
the screen
•
•
No picture, the LED light
is white
•
•
•
The picture cannot fill
the height or width of
the screen
•
•
Black screen
•
•
•
•
•
No charging
•
•
•
•
•
Intermittent charging
•
•
Perform display self-test.
Ensure that the video cable connecting the display 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 YCbCr in the Color menu 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.
Check the Aspect Ratio setting in the Display menu OSD.
Reset the display to factory settings.
Turn off the monitor, unplug the monitor power cable, plug it back, and then
turn on the monitor.
Check if the OSD menu is locked. If yes, move and hold the joystick up/down/
left/right for 4 seconds to unlock.
Check the signal source. Ensure the computer is not in the power saving mode
by moving the mouse or pressing any key on the keyboard.
Check whether the signal cable is plugged in properly. Re-plug the signal cable
if necessary.
Reset the computer or video player.
Due to different video formats (aspect ratio) of DVDs, the display may display in
full screen.
Run the built-in diagnostics.
Verify if the USB Type-C interface of the device can support DP alternate
mode.
Verify if the device required more than 90 W power charging.
USB Type-C interface of device cannot support DP alternate mode.
Set Windows to Projection mode.
Ensure that the USB Type-C cable is not damaged.
Verify if the device can support one of 5 V/9 V/15 V/20 V charging profiles.
Verify if the Notebook requires a >90W power adapter.
If the Notebook requires a >90W power adapter, it may not charge with the
USB Type-C connection.
Ensure that you use only the Dell approved adapter or the adapter that comes
with the product.
Ensure that the USB Type-C cable is not damaged.
Check if the maximum power consumption of device is over 90 W.
Ensure that you use only Dell approved adapter or the adapter that comes with
the product.
Ensure that the USB Type-C cable is not damaged.
Operating the display
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