Computer Screen Problems
The monitor is often taken for granted by computer users--as long as a problem doesn't occur. When a monitor develops an issue, however, it can be difficult for an inexperienced user to troubleshoot it.
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Types
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Monitor problems include a flickering image, distortion or poor image quality, light or dark spots on the display and outright failure. Because a computer user spends all of his time looking at the monitor, these problems often are immediately evident when they occur.
Misconceptions
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Monitor failure is rare. What appears to be an issue with the computer monitor most often is caused by a problem elsewhere--a poor cable connection, outdated video card drivers, an incorrect screen-resolution setting or a digital connection to an analog video port.
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Troubleshooting
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An effective method for troubleshooting a monitor problem is to begin with the simplest solution and graduate to more complex solutions until the problem is resolved. The first steps for correcting a monitor problem is to make sure the monitor is receiving power and is securely connected to the computer and that video card drivers are updated. Power cycling the monitor--unplugging it from the wall outlet for a full 30 seconds--can be effective in resolving some types of issues.
Prevention
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A computer monitor is sensitive to outside forces, and many types of problems can be avoided by treating it with care. A monitor should never be moved while it is connected to the computer--fragile pins can be bent, reducing the quality of the signal the monitor receives from the computer. The monitor should be cleaned periodically with a soft, lint-free cloth, dampened with a little distilled water. This will keep dust and debris from forming deposits on the screen and help to insure that the rear vents effectively allow hot air to escape.
Warning
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Computer monitors can store potentially lethal levels of electricity, even when unplugged. Never attempt to open a monitor unless you are a qualified electrician. If a monitor appears to have failed and does not respond when the power is turned on, it should be replaced by the manufacturer if under warranty or taken to a repair shop.
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