Dell P6524QT Monitor Simplified Service Manual - Page 22

6. Trouble Shooting Instructions Common problems The following table contains general information about common display problems you might encounter and the possible solutions: Common Symptoms No Video/ Power LED o No Video/ Power LED on Poor Focus Shaky/Jittery Video Missing Pixels What You Experience Possible Solutions No picture • Ensure that the video cable connecting the display 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 depressed fully. • Ensure that the correct input source is selected in the Input Source menu. No picture or no • Increase brightness & contrast controls via brightness OSD. • Perform display self-test feature check. • Check for bent or broken pins in the video cable connector. • Run the built-in diagnostics. • Ensure that the correct input source is selected in the Input Source menu. Picture is fuzzy, blurry, or ghosting • Eliminate video extension cables. • Reset the display to factory settings. • Change the video resolution to the correct aspect ratio. Wavy picture or • Reset the display to factory settings. ne movement • Check environmental factors. • Relocate the display and test in another room. LCD screen has • Cycle power on-o . spots • Pixel that is permanently o is a natural defect that can occur in LCD technology. • For more information on Dell Display Quality and Pixel Policy, see Dell Support site at: http://www.dell.com/support/monitors.