CompTIA
220-802 · Question #517
220-802 Question #517: Real Exam Question with Answer & Explanation
The correct answer is B: The LCD has dead pixels.. Black dots fixed on an LCD screen indicate dead pixels, which are permanent hardware defects where individual pixels stop producing light.
Question
Multiple users have reported that there are black dots on the conference room LCD when doing presentations. Which of the following is MOST likely the problem?
Options
- AThe video card displaying to the LCD is incompatible.
- BThe LCD has dead pixels.
- CThe LCD needs to be recalibrated.
- DThe conference room PC is overheating.
Explanation
Black dots fixed on an LCD screen indicate dead pixels, which are permanent hardware defects where individual pixels stop producing light.
Common mistakes.
- A. An incompatible video card would cause issues like no signal, incorrect resolution, or flickering - not fixed black dots at specific pixel locations on the panel.
- C. Recalibration adjusts color accuracy, brightness, and white balance but cannot repair physically failed pixels.
- D. PC overheating causes system slowdowns, shutdowns, or GPU rendering artifacts, not permanent fixed black dots on the display panel itself.
Concept tested. LCD dead pixel hardware defect identification
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