What did I fry on my logic board?

Question

MacBook Air 13" Mid 2011

모델 A1369, 1.6, 1.7, or 1.8 GHz 프로세서, 64, 128 또는 256GB 플래시 저장공간

328 질문 전체 보기

photogwa @photogwa

평판: 11

1

게시일: 2016년 9월 20일

옵션

What did I fry on my logic board?

So. I was changing out my LCD in my MBA when I ran into a problem. After connecting the LCD connector and the LED ribbon, the display would turn on but the LEDs would not. I was almost positive that the LED ribbon was installed correctly, but after hours of scouring the internet, I think I have come to the conclusion that it was actually backwards. The problem is, I can't test that now because the LCD doesn't work anymore. And I think it doesn't work anymore because when inspecting the LCD connector using the "pro" tweezers I bought, I happen to notice a tiny bit of smoke coming from the connector. At first, the computer wouldn't even turn on, but then I connected the LCD and it the computer turned on. At that time I didn't think to see if the LCD was working too. I assumed I was good. By the time I figured out to install the LED ribbon in the other way, it was too late and now presumably something is fried. My question is, how do I figure out what is fried? The whole logical board? Just the LCD controller? I don't know where to start. Any help is appreciated. Thanks.

EDIT: Below is images of the board.

[image|904917

[image|904912

Suspected Damage:

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

예 아니요

점수 0

댓글 2개

photogwa start by taking it apart, removing the logicboard and checking for obvious damage. Post some images of your board with your question. Use this guide 기존 질문에 이미지 추가하기 for that. It will allow us to see what you see. Use these guides MacBook Air 13" Mid 2011 to work on your computer.

oldturkey03 의 2016년 9월 20일

Thanks for the guidance. I realized after I went to open the bottom that I don't have a small enough screwdriver. So I am waiting on that to arrive. I will post images once I get it open.

photogwa 의 2016년 9월 23일

댓글 달기

답변 1개

선택된 답변

oldturkey03 @oldturkey03

평판: 781.5k

1.1k

893

2.3k

게시일: 2016년 10월 2일

옵션

photogwa this is not an answer just another request. Any chance you can zoom in to show more of the area outlined in the red square? something looks odd on one of the components. Could just be my old eyes....:-)

If my eyes do not fool me, then that is a coil for the LCD switch circuit

The component in question is a fixed inductor FERR 120OHM 1.5A in a 0402 package.

해당 답변은 도움이 되었습니까?

예 아니요

점수 3

댓글 6개:

Hmmm...not looking good. I think you are on the right track. See added photo.

photogwa 의 2016년 10월 2일

That is definitely a coil. The image you posted is not very clear. Any chance you can zoom in with your camera and get a clear shot of it?

oldturkey03 의 2016년 10월 2일

How's that? (see last image) I think this is about as clear as I can get. Dusted off my DSLR but I don't have a good macro lens.

photogwa 의 2016년 10월 2일

Perfect. Yes, looks like there was some heat involved. I replace that part for sure.

oldturkey03 의 2016년 10월 3일

Thanks for the help!

photogwa 의 2016년 10월 5일

댓글 1개 더보기

댓글 달기

photogwa start by taking it apart, removing the logicboard and checking for obvious damage. Post some images of your board with your question. Use this guide 기존 질문에 이미지 추가하기 for that. It will allow us to see what you see. Use these guides MacBook Air 13" Mid 2011 to work on your computer. — oldturkey03
Thanks for the guidance. I realized after I went to open the bottom that I don't have a small enough screwdriver. So I am waiting on that to arrive. I will post images once I get it open. — photogwa
Hmmm...not looking good. I think you are on the right track. See added photo. — photogwa
That is definitely a coil. The image you posted is not very clear. Any chance you can zoom in with your camera and get a clear shot of it? — oldturkey03
How's that? (see last image) I think this is about as clear as I can get. Dusted off my DSLR but I don't have a good macro lens. — photogwa
Perfect. Yes, looks like there was some heat involved. I replace that part for sure. — oldturkey03

MacBook Air 13" Mid 2011

What did I fry on my logic board?

답변 1개

Update (10/03/2016)

귀하의 답변을 추가하세요