Dell ST2420LB, ST2421L Product-Specific Problems, Troubleshooting the Dell Soundbar Optional

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Adjust Phase and Pixel Clock controls via OSD.

 

 

Perform monitor self-test feature check and determine if these lines are also in self-t

 

 

Check for bent or broken pins in the video cable connector.

 

 

Run the built-in diagnostics.

 

 

 

 

 

Synchronization Problems

Screen is scrambled or appears

Reset the monitor to Factory Settings.

 

torn

Perform Auto Adjust via OSD.

 

 

Adjust Phase and Pixel Clock controls via OSD.

 

 

Perform monitor self-test feature check to determine if scrambled screen appears in

 

 

 

mode.

 

 

Check for bent or broken pins in the video cable connector.

 

 

Restart the computer in the safe mode.

 

 

 

 

 

Safety Related Issues

Visible signs of smoke or sparks

Do not perform any troubleshooting steps.

 

 

Contact Dell immediately.

 

 

 

 

 

Intermittent Problems

Monitor turns on & off

Ensure that the video cable connecting the monitor to the computer is connected pr

 

 

 

secure.

 

 

Reset the monitor to Factory Settings.

 

 

Perform monitor self-test feature check to determine if the intermittent problem occu

 

 

 

mode.

 

 

 

 

 

Missing Color

Picture lacks color

Perform monitor self-test feature check.

 

 

Ensure that the video cable connecting the monitor to the computer is connected pr

 

 

 

secure.

 

 

Check for bent or broken pins in the video cable connector.

 

 

 

 

 

Wrong Color

Picture color is not good

Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depe

 

 

 

application.

 

 

Try a different Color Preset Setting in Color Settings OSD. Adjust R/G/B value in Colo

 

 

 

OSD if the Color Management is turned off.

 

 

Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.

 

 

 

 

 

Image retention from a static

Faint shadow from the static image

Use the Power Management feature to turn off the monitor at all times when not in

image left on the monitor for a

displayed appears on the screen

 

information, see Power Management Modes).

long period of time

 

Alternatively, use a dynamically changing screensaver.

 

 

 

 

 

 

 

 

 

 

Product-Specific Problems

SPECIFIC SYMPTOMS

Screen image is too small

Cannot adjust the monitor with the buttons on the front panel

No Input Signal when user controls pressed

WHAT YOU EXPERIENCE

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 amber. When control button is pressed, the message " No VGA cable", "No DVI-D cable"or "No HDMI cable" will appear.

POSSIBLE SOLUTIONS

Perform monitor reset on "Factory Reset"

 

 

 

 

Turn the monitor off and unplug the power cord and then plug back and power on

 

 

 

 

Check the signal source. Ensure that the computer is not in power saving by movin

 

or pressing any key on the keyboard.

Check whether the signal cable is plugged in and seated properly. Re-plug the sign

 

necessary.

Re-boot the computer or video player.

 

 

 

 

The monitor will not fill the entire

The picture does not fill the

screen.

height or width of the screen.

 

 

Due to the non-standard formats of DVDs, the monitor may not show the full scree

Troubleshooting the Dell™ Soundbar (Optional)

COMMON SYMPTOMS

No Sound

WHAT YOU EXPERIENCE

Soundbar has power - power indicator is on.

POSSIBLE SOLUTIONS

Plug the audio line-in cable into the computer's audio out jack.

Set all Windows volume controls to their maximum.

Play some audio content on the computer (i.e., audio CD, or MP3).

Turn the volume up.

Clean and reseat the audio line-in plug.

Test the Soundbar using another audio source (i.e., portable CD player).

Distorted Sound

Computer's sound card is used as the audio source.

Clear any obstructions between the Soundbar and the user.

Confirm that the audio line-in plug is completely inserted into the jack of the sound

Set all Windows volume controls to their midpoints.

Decrease the volume of the audio application.

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Contents Dell ST2420L/ST2421L monitor Users Guide Package Contents About Your MonitorProduct Features Identifying Parts and Features Front ViewBack View Front View Front Panel Controls Label DescriptionSide View Bottom ViewBack View Label Description/Use Left SidePin Assignments Monitor SpecificationsPower Management Modes DVI Connector Pin Pin Side of the Connected Signal Number CableFlat Panel Specifications Model ST2420L/ST2421LResolution Preset Display ModesPhysical Characteristics Video Supported ModesMaintenance Guidelines EnvironmentalPlug and Play Capability LCD Monitor Quality & Pixel PolicyCaring for Your Monitor Appendix Setting Up Your Monitor Click Change Display Settings Click Advanced Settings Operating the Monitor Using the Front PanelUsing the On-Screen Display OSD Menu Main Menu for non Analog non VGA Input Brightness Contrast Back Auto Adjust Input Source Auto SelectVGA DVI-D Hdmi Display Settings Page DDC/CI Factory Reset PersonalizeOSD Warning Messages Click Change Display Settings Setting the Maximum ResolutionUsing the Dell Soundbar Optional Using the Tilt TiltSetting Up Your Monitor Dell ST2420L/ST2421L monitor Setting Up the Monitor Attaching the BaseConnecting the Monitor Attaching the Soundbar Optional Removing the Monitor StandSelf-Test Solving ProblemsBuilt-in Diagnostics Common Problems Common Symptoms What You Experience Possible SolutionsProduct-Specific Problems Troubleshooting the Dell Soundbar OptionalBack to Contents