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What should you replace if the brightness or contrast adjustments were malfunctioning on a laptop?

  • A.fuse
  • B.led display
  • C.adjustment switch
  • D.led display cable

Answer: B

Correct answer: led display

Brightness and contrast on a laptop are properties of the backlight and panel, so a fault that survives the adjustment is in the display assembly itself rather than in the switch or the fuse.

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