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MacBook Air A1932 No keyboard backlight after screen replacement repair

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Revision as of 08:40, 27 October 2023 by ASRepairs (talk | contribs) (Created page with "{{stub}} {{Repair Guide |Device= |Affects parts= |Needs equipment= |Type= |Difficulty= }} ==Problem description== Most cases of no keyboard backlight after a screen replacement will be due to an incorrect part being installed. The ambient light sensor (ALS) is used to control keyboard backlight. The ALS is different between 2018 and 2019 model A1932 MacBook Air devices, and are incompatible due to firmware. If a 2019 screen is installed on a 2018 device, keyboard backlig...")
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MacBook Air A1932 No keyboard backlight after screen replacement repair
Device
Affects part(s)
Needs equipment
Difficulty
Type


Problem description

Most cases of no keyboard backlight after a screen replacement will be due to an incorrect part being installed. The ambient light sensor (ALS) is used to control keyboard backlight. The ALS is different between 2018 and 2019 model A1932 MacBook Air devices, and are incompatible due to firmware. If a 2019 screen is installed on a 2018 device, keyboard backlight will not function. If a 2018 screen is installed on a 2019 device, keyboard backlight and true tone will not function.

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Symptoms

  • No keyboard backlight

Solution

Source the correct display for your MacBook from the same year

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