A1932, Backlight not working, Image & caps lock ok

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2018年13寸视网膜显示屏MacBook Air

期待已久的MacBook Air更新到来，带来了全新的英特尔酷睿i5处理器、升级了的视网膜显示屏以及众多其他更新。发布于2018年11月7日。

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wordi pressi @wordipressi

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发帖于: 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.

由 Dan 完成的 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 声誉积分: 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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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.