During a conference-room setup, an IT technician notices that the projected image randomly blanks out for a second and then returns. The projector's fan is running normally and the lamp has fewer than 500 of its 2,000 rated hours. Which of the following is the MOST likely cause of this intermittent display issue?
The projector bulb is nearing the end of its service life
Excess ambient light in the room is washing out the image
The laptop's graphics driver is incompatible with the projector
A loose or physically damaged HDMI/VGA cable between the laptop and projector
A loose or physically damaged video cable is the most common cause of random blanking or flickering, because broken conductors or poor shielding interrupt the digital signal. A bulb nearing end-of-life or outdated graphics drivers can cause image problems, but they do not usually produce brief signal dropouts that immediately recover. Excess ambient light can wash out an image but will not cause it to disappear. Re-seating or replacing the damaged cable typically resolves the issue.
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