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Repairing a computer monitor can be dangerous and complicated, and major issues should be left to professionals. Minor problems can be fixed by the user, but opening the case can void the warranty and cause further damage. CRT and LCD monitors require different repair techniques, and some problems can be fixed with software updates or cable replacements. Before attempting a major repair, check for minor issues and consider the cost of repair versus buying a new monitor.
Repairing your monitor can be a complicated process, with the risk of damaging the unit and getting an electric shock. Any significant problem with a computer monitor will almost certainly require professional repair. Very few people have the technical knowledge or skills to fix a monitor that has a serious problem. However, some minor monitor problems can be fixed by the computer user, either through a software update or by replacing a cable.
Most major repair issues involve opening the monitor case. Do not open the case if the monitor remains plugged into an electrical outlet because there is a high risk of electric shock inside a computer monitor. With some drives, the power supply continues to hold a charge even when the drive is not plugged into an outlet. Monitor repair that requires opening the case is very dangerous and beginners should not attempt it.
Most computer monitors come in two types. CRT, or cathode ray tube, monitors represent an older technology involving bulky units. LCD, or liquid crystal display, monitors are a newer technology with flat panel units. Monitor repair techniques are different for the two types, although some minor problems can be the same on both CRT and LCD monitors.
The inside of a computer monitor can consist of a screen, electrical components, a power supply, circuit boards, a backlight, and an electron gun. The backlight in an LCD monitor is a common reason for a malfunctioning unit, but it’s difficult to fix without disassembling the entire unit. The electron gun in a CRT monitor is a very delicate component, and even a slight bump during repair can throw it out of alignment, ruining the monitor. Some CRT monitors will malfunction due to loose solder joints and connectors.
When preparing to perform a monitor repair that involves opening the case, be aware that doing so will almost certainly void the manufacturer’s warranty unless an authorized repair technician is involved. Anyone attempting to repair the monitor themselves should do so as a last resort and only on an out-of-warranty model. An inexperienced person can end up further damaging the monitor or injuring themselves while trying to repair it. The components inside the monitor are not easily repaired.
Before you open your case to attempt a major monitor repair, it’s important to check for a few potentially minor issues. For example, check the power cable of the unit and the display cable. It’s possible that the cord or cable has failed, so try it with another working monitor. Test all potential malfunctioning components on the outside of the case before attempting to open the case and repair the monitor. Keep in mind that some monitor problems don’t require a monitor repair at all and can be corrected through software fixes and updates.
Finally, before authorizing a repair technician to work on a unit, request a quote. The cost of repairing your monitor may be more than the cost of buying a new monitor.
