CompTIA A+ Core 1 (220-1101) — Question 139

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?

Answer options

• A. Defective inverter
• B. Incompatible video driver
• C. Incorrect input source
• D. Burned-out bulb

Correct answer: A

Explanation

The presence of a faint image when shining a flashlight indicates that the display is receiving video signals but lacks sufficient backlighting, which is commonly caused by a defective inverter. An incompatible video driver would not allow any image to be displayed, while an incorrect input source would not produce any image at all. A burned-out bulb is not applicable in this case since the laptop uses an inverter to power the backlight.