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현재 버전 게시자: oldturkey03 (투표 내용) ,

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Water damage - what to replace (logic board / IO-board)?

본문:

Hello,

my sister spilled water/tea over her Macbook Air Early 2014 a while ago. It powered off immediately (electrical short?) and didn't turn on again. We let it dry for about 1 week and since then we see this behavior:

The MBA boots up as usual, but *only* after unplugging and re-plugging the battery connector inside the case, then connecting the (external) charger and then pressing the power button. After pressing the power button, the CPU fan spins and stops for 3 times (~1sec), and then it finally boots. When booted, the CPU fan runs on full speed most of the time and the laptop is *very* slow. Someone told me it might be that the laptop "thinks" it's too hot and puts itself into overtemp-safety-mode and that the logic board needs to be replaced. Other than that, all components (audio, screen, keyboard) seem to work fine.

I disassembled the MBA and some parts of the logic board look corroded and dirty from the liquid. I was about to order a new logic board and then saw that there is also a little I/O board next to the CPU fan.

* Do you think replacing the logic board fixes all issues?
* Do I need to replace the I/O board as well; or maybe only the I/O board?
* Can I perform any tests to see what exactly needs to be replaced?
* Are there different models of logic boards for the early 2014 that are not compatible? (I heard that some have a fan that is fixed to the CPU heatsink, and some have a removeable fan?)
* Can I only use early 2014 logic boards / I/O boards or also older/newer ones?

Thank you very much for any help!

Best,

Martin

기기:

MacBook Air 13" Early 2014

현황:

open

승인된 답변:

317211

편집 작업: Martin ,

제목:

Water damage - what to replace (logic board / IO-board)?

본문:

Hello,
 
my sister spilled water/tea over her Macbook Air Early 2014 a couple of monthswhile ago. It powered off immediately (electrical short?) and didn't turn on again. We let it dry for about 1 week and since then we facesee this behavior:
my sister spilled water/tea over her Macbook Air Early 2014 a couple of monthswhile ago. It powered off immediately (electrical short?) and didn't turn on again. We let it dry for about 1 week and since then we facesee this behavior:
 
The MBA boots up as usual, but *only* after unplugging and re-plugging the battery connector inside the case, then connecting the (external) charger and then pressing the power button. FurthermoreAfter pressing the power button, the CPU fan spins and stops for 3 times (~1sec), and then it finally boots. When booted, the CPU fan runs on full speed most of the time and the laptop is *very* slow. Someone told me it might be that the laptop "thinks" it's too hot and puts itself into overtemp-safety-mode and that the logic board needs to be replaced. Other than that, all components (audio, screen, keyboard) seem to work fine.
The MBA boots up as usual, but *only* after unplugging and re-plugging the battery connector inside the case, then connecting the (external) charger and then pressing the power button. FurthermoreAfter pressing the power button, the CPU fan spins and stops for 3 times (~1sec), and then it finally boots. When booted, the CPU fan runs on full speed most of the time and the laptop is *very* slow. Someone told me it might be that the laptop "thinks" it's too hot and puts itself into overtemp-safety-mode and that the logic board needs to be replaced. Other than that, all components (audio, screen, keyboard) seem to work fine.
 
I disassembled the MBA and some parts of the logic board look corroded and dirty from the liquid. I was about to order a new logic board and then saw that there is also a little I/O board next to the CPU fan.
 
* Do you think replacing the logic board fixes all issues?
* Do I need to replace the I/O board as well; or maybe only the I/O board?
* Can I perform any tests to see what exactly needs to be replaced?
* Are there different models of logic boards for the early 2014 that are not compatible? (I heard that some have a fan that is fixed to the CPU heatsink, and some have a removeable fan?)
* Can I only use early 2014 logic boards / I/O boards or also older/newer ones?
 
Thank you very much for any help!
 
Best,
 
Martin

기기:

MacBook Air 13" Early 2014

현황:

open

원문 게시자: Martin ,

제목:

Water damage - what to replace (logic board / IO-board)?

본문:

Hello,

my sister spilled water/tea over her Macbook Air Early 2014 a couple of months ago. It powered off immediately and didn't turn on again. We let it dry for about 1 week and since then we face this behavior:

The MBA boots up as usual, but *only* after unplugging and re-plugging the battery connector inside the case, then connecting the (external) charger and then pressing the power button. Furthermore, the CPU fan runs on full speed most of the time and the laptop is *very* slow. Someone told me it might be that the laptop "thinks" it's too hot and puts itself into overtemp-safety-mode and that the logic board needs to be replaced. Other than that, all components (audio, screen, keyboard) seem to work fine.

I disassembled the MBA and some parts of the logic board look corroded and dirty from the liquid. I was about to order a new logic board and then saw that there is also a little I/O board next to the CPU fan.

* Do you think replacing the logic board fixes all issues?
* Do I need to replace the I/O board as well; or maybe only the I/O board?
* Can I perform any tests to see what exactly needs to be replaced?
* Are there different models of logic boards for the early 2014 that are not compatible? (I heard that some have a fan that is fixed to the CPU heatsink, and some have a removeable fan?)
* Can I only use early 2014 logic boards / I/O boards or also older/newer ones?

Thank you very much for any help!

Best,

Martin

기기:

MacBook Air 13" Early 2014

현황:

open