주요 콘텐츠로 건너뛰기

MacBook Air 11"의 2014년 4월 업데이트는 새로운 듀얼-코어 i5 및 i7 Haswell 프로세서를 장착하고 배터리 성능을 약간 향상하였습니다.

100 질문 전체 보기

MacBook Air Backlight not Working / connection shorted to ground

MacBook backlight isn't working and after consuming hours of repair content and checking the board I dared to start removing possibly faulty parts from the board, but I'm kinda Stuck.

The first thing that struck me when taking it apart was the connector being broken or burned

Block Image

My hope was that it was just the cable, so I bought a new one and tested and of course it didn't work

I proceeded some testing and I found the backlight fuse was blown and also the backlight Pins on the LCD connector are shorting to ground.

I was just about to just reassemble the MacBook without screen and just use it that way when I reminded my self that webcam and antennas would be gone then, so I said F it and started removing parts.

I started with the backlight IC (U7701 or LP8550 don't know how it's called the software saiys 7701 but Google only shows 8550 when searching) And also removed the backlight fuse.

However the backlight pins are still shorted to ground and now I'm afraid to remove too many parts that aren't the cause.

Do you have any ideas what could be the cause of the short and what needs to be replaced?

Here are some pics of the board. There's just nothing there that looks burned or damaged to me.

Block Image

Block Image

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 0
댓글 2개

TubeTorials which pins show short to ground? Your LCD connector should come off next.

The two backlight pins

Yeah I'm gonna do that, wish me luck

댓글 달기

답변 1개

선택된 답변

The Red dot tells us this area got wet! (liquid detector sticker)

Yes, I can see the signs of burnt contacts in your picture. Sadly you'll need to replace the logic board connector. Without the correct tools all you’ll do is damage things. Best to leave this for someone with deeper micro-soldering skills.

Where are you located? nearest country and city.

해당 답변은 도움이 되었습니까?

점수 0

댓글 2개:

Oh didn't even notice the red sticker.

So the LCD connector you mean?

Germany, but I'm gonna try it myself the repair price would be more than I paid for the MacBook itself, I just got it for fun

Here's the needed part LCD Display LVDS Connector

Using a fine tipped iron carefully lift each data contacts so they are no longer touching the logic board using solder-wick to take the slider away.

댓글 달기

귀하의 답변을 추가하세요

TubeTorials 님은 대단히 고마워 할 것입니다.
조회 통계:

24 시간 전: 0

7일 전: 0

30일 전: 2

전체 시간: 172