52 Solving Problemsw w w . d e l l . c o m | s u p p o r t . d e l l . c o mVideo and Monitor ProblemsIf the screen is blankNOTE: See the monitor documentation for troubleshooting procedures.If the screen is difficult to readC H E C K T H E M O N I T O R P O W E R L I G H T — If the power light is off, firmlypress the button to ensure that the monitor is turned on. If the power light is litor blinking, the monitor has power. If the power light is blinking, press a key onthe keyboard or move the mouse.C H E C K T H E M O N I T O R C A B L E C O N N E C T I O N — Check the connector forbent or broken pins. (It is normal for monitor cable connectors to have missingpins.) Ensure that the video cable is connected as shown on the setup diagram foryour computer.T E S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet isworking by testing it with another device, such as a lamp.S W A P T H E P O W E R C A B L E S — Swap the computer and monitor powercables to determine if the power cable is defective.T E S T T H E V I D E O EX T E N S I O N C A B L E ( I F U S E D ) — If you are using avideo extension cable and removing the cable solves the problem, the cable isdefective.T E S T A N O T H E R M O N I T O R — If another monitor is available, connect it tothe computer.C H E C K T H E D I A G N O S T I C L I G H T S — See page 56.C H E C K T H E M O N I T O R S E T T I N G S — See the monitor documentation forinstructions on adjusting the contrast and brightness, demagnetizing(degaussing) the monitor, and running the monitor self-test.
