A technician is troubleshooting a laptop that has a blank LCD panel. The technician shines a flashlight into the LCD and sees a faint image. Which of the following BEST describes the issue?
The most likely cause of the issue is A. Defective inverter.
An inverter converts DC power into AC power, which is necessary to illuminate the LCD panel. A faulty inverter can cause the screen to appear dark or dim, even if the backlight is functional.
Here's why the other options are less likely:
B. Incompatible video driver: This would typically cause display artifacts or incorrect resolutions, rather than a completely blank screen.
C. Incorrect input source: This would usually result in a "No Signal" message on the screen.
D. Burned-out bulb: This is possible, but less likely in modern LCD panels.
Therefore, a defective inverter is the most probable cause of the blank screen issue.
The inverter is a component that provides power to the LCD panel. If the inverter is defective, the LCD panel will not light up. However, if you shine a flashlight into the LCD panel, you will be able to see a faint image because the backlight is still working.
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