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Troubleshooting
Common problems
The following table contains general information about common monitor problems that you might encounter and the possible
solutions:
Table 7. Common problems
Common symptoms What you experience Possible solutions
No video/power LED off No picture • Ensure that the video cable connecting the monitor and the computer
is properly connected and secure.
• Verify that the power outlet is functioning properly using any other
electrical equipment.
• Ensure that the power button is pressed fully.
• Ensure that the correct input source is selected. For more
information, see the Input Source menu in the User's Guide of
S3225QS.
No video/power LED on No picture • Increase brightness and contrast controls using the OSD.
• Perform monitor self-test feature check.
• Check for bent or broken pins in the video cable connector.
• Run the built-in diagnostics. For more information, see Built-in
diagnostics.
• Ensure that the correct input source is selected. For more
information, see the Input Source menu in the User's Guide of
S3225QS.
Poor focus Picture is fuzzy, blurry, or
ghosting
• Eliminate video extension cables.
• Reset the monitor to factory settings (Factory Reset).
• Change the video resolution to the correct aspect ratio.
Shaky/jittery video Wavy picture or fine
movement
• Reset the monitor to factory settings (Factory Reset).
• Check environmental factors.
• Relocate the monitor and test in another room.
Missing pixels LCD screen has spots • Cycle power On-Off.
• Pixel that is permanently off is a natural defect that can occur in LCD
technology.
• For more information about Dell Monitor Quality and Pixel Policy, see
www.dell.com/pixelguidelines.
Stuck-on pixels LCD screen has bright spots • Cycle power On-Off.
• Pixel that is permanently off is a natural defect that can occur in LCD
technology.
• For more information about Dell Monitor Quality and Pixel Policy, see
www.dell.com/pixelguidelines.
Geometric distortion Screen not centered
correctly
• Reset the monitor to factory settings (Factory Reset).
Horizontal or vertical lines Screen has one or more
lines
• Reset the monitor to factory settings (Factory Reset).
• Perform a monitor self-test feature check (see Self-Test) 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. For more information, see Built-in
diagnostics.
Synchronization
problems
Screen is scrambled or
appears torn
• Reset the monitor to factory settings (Factory Reset).
• Perform monitor self-test feature check (see Self-Test) 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.
Safety-related issues Visible signs of smoke or
sparks
• Do not perform any troubleshooting steps.
• Contacting Dell immediately.
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