220-802 Question #170: Real Exam Question with Answer & Explanation

The correct answer is D: Replace the LCD. Dead pixels are individual pixels on the LCD panel that have permanently failed and no longer produce light or color. Because they are physical defects in the LCD matrix itself, they cannot be repaired through software or by replacing ancillary components. The only effective reme

Question

Which of the following is the BEST way to get rid of dead pixels on a laptop screen?

Options

AReplace the inverter
BReplace the back bezel
CReplace back light
DReplace the LCD

Explanation

Dead pixels are individual pixels on the LCD panel that have permanently failed and no longer produce light or color. Because they are physical defects in the LCD matrix itself, they cannot be repaired through software or by replacing ancillary components. The only effective remedy is to replace the entire LCD panel. The inverter powers the backlight but has no relation to pixel function. The back bezel is the plastic casing and does not affect pixels. The backlight illuminates the screen but dead pixels are distinct from backlight issues - a failed backlight causes the whole screen to go dark, not individual pixel failures.

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