I broke a MacBook Air backlight by connecting a faulty screen

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2015年初 MacBook Air 13"

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Cero @cero97918

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发帖于: 2018年10月6日

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I broke a MacBook Air backlight by connecting a faulty screen

I received 2 13” Macbook Airs in need of repair: a 2014 model with a cracked (but semi-working) screen, and a 2015 model with water damage, which caused its backlight to fail (but it did work using a flashlight).

When I disconnected the LCD cable from the water damaged Macbook, a few pins on the right side looked slightly damaged, presumably corroded. Wanting to make sure that the backlight issue was caused by a logic board issue, I then swapped the logic boards and connected the water damaged logic board to the cracked LCD. Same thing: no backlight.

Here’s where I made a mistake: to check if the screen on the water damaged Macbook Air was salvageable, I then connected its damaged connector to the good logic board from the other Macbook. I got no image when booting, and then noticed a faint burning smell. I disconnected the battery, and realising I might have made a very bad mistake, I swapped the boards again to see if there was any damage.

Now, the “good” logic board connected to the “good” (but cracked) screen no longer shows a backlight. With a flashlight, I can see the cracked (semi-working) screen. So I basically broke something on the 2015 logic board by connecting a bad LCD connector, causing the backlight to break. Is there anything I can check / do?

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oldturkey03 @oldturkey03

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发帖于: 2018年10月6日

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iphone3ghulp yes, you did. It appears as if you managed to shorten out at least the backlight circuitry. To begin the troubleshooting, you will now have to check the board connector and see if it got damaged as well as check the backlight fuse to see if it has failed.

for further identification etc. it might be helpful if you post some good images of your board with your question. 在已经存在的问题里加入图片

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Sorry about the comment, I'd understand any noob doing that out of lack of experience, but this question doesn't seem suitable to "a Belgian company specialised in repairing Macs".. :-?

由 arbaman 完成的 2018年10月6日

@arbaman I am certain it was the new apprentice that started last week who is at fault ;-)

由 oldturkey03 完成的 2018年10月6日

I really hope so, for customer's and compay's sake..that board only is a week's pay, expensive apprenticeship :-p

由 arbaman 完成的 2018年10月6日

No, it was simply me who made the error. I make mistakes sometimes... Anyway it's not like I would charge the customer for it. Thanks for the help oldturkey03, I'll add add pictures tomorrow.

由 Cero 完成的 2018年10月7日

Thanks again, replacing the fuse fixed the issue.

由 Cero 完成的 2018年10月10日

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Sorry about the comment, I'd understand any noob doing that out of lack of experience, but this question doesn't seem suitable to "a Belgian company specialised in repairing Macs".. :-? — arbaman
@arbaman I am certain it was the new apprentice that started last week who is at fault ;-) — oldturkey03
I really hope so, for customer's and compay's sake..that board only is a week's pay, expensive apprenticeship :-p — arbaman
No, it was simply me who made the error. I make mistakes sometimes... Anyway it's not like I would charge the customer for it. Thanks for the help oldturkey03, I'll add add pictures tomorrow. — Cero

2015年初 MacBook Air 13"

I broke a MacBook Air backlight by connecting a faulty screen

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