A1932, Backlight not working, Image & caps lock ok

Question

MacBook Air 13インチ Retina Display Late 2018

長らく待ちわびた、人気のMacBook AirがIntel社のCore i5プロセッサ、アップデートされたRetina Displayそして様々なアップグレードを搭載して戻ってきました。2018年11月7日に発売されました。

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wordi pressi @wordipressi

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投稿日: 2022年3月10日

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A1932, Backlight not working, Image & caps lock ok

Macbook Air 13” A1932.

As I was using my macbook it made one “click” sound and the backlight went dark. I can see the apple logo when turning on if I shine a flashlight on it. Caps lock is lighting up and so does the keyboard. I have tried the resetting stuff with the multiple button presses, but no change. I opened the backplate to look at the logic board and did not see any obvious damage, in fact it looks new since I only used it like 4 times.

Is there anything else I can check on this model?

I have read about a backlight fuse, but I don’t know how it looks or where it is located, could somebody guide me to it?

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To be clear you are shining the flashlight through the lids Apple logo and can see your desktop? Or if you are in a darkened room do you see a slight glow from the system.

Dan さんによる2022年3月11日

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To be clear you are shining the flashlight through the lids Apple logo and can see your desktop? Or if you are in a darkened room do you see a slight glow from the system. — Dan

oldturkey03 @oldturkey03 評価: 782.4千 1.1千 893 2.3千 · Answer 1 · 2022-09-08T19:39:55-07:00

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oldturkey03 @oldturkey03

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投稿日: 2022年9月8日

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wordi pressi the backlight fuse is reference designator F8400. It is a 32V 3A fuse in a 0603 package. Location on your logicboard as shown. Measure continuity with a multimeter or your can measure for proper voltage with the board power applied.

If it is not the fuse,you will have to check deeper for the cause. Use the schematic for the backlight as provided. Do not forget to check your display connector since a lot of short circuit happen right there. Post some images of your logicboard (both sides) with your QUESTION so we can see what you see.