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Is there a problem with the I/O board or logic board

Hello. I recently replaced the thermal paste for my MacBook Air 2017 following the ifixit guide. When reassembling everything, I turned on the laptop and found out the MacBook charger was turning orange or green which the MacBook wasn’t charging, the audio wasn’t working, the computer wasn’t sleeping and the fan isn’t working (0rpm). I used Apple Diagnostics which found problems with the fan and the SMC. My question is there a problem with the I/O flex cable, I/O board or the logic board?

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What was the diagnostic codes?

I would inspect the parts to see if you hadn't installed things properly or damaged something.

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The diagnostic codes were PFM006 and PPF004

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  • PPF004 - There may be an issue with the fan.
  • PFM006 - There may be an issue with the System Management Controller (SMC)

The first one I’ve listed here is the more important one! The second is based on the first ones fault and/or something deeper!

So… I would download this app to help you diagnose things TG Pro It will allow you to see the RPM of your fan. I’m suspecting its not running to well if at all.

This could be as simple as dust and debris jamming it up, or it just could have failed. Here’s the guide to get to it MacBook Air 13インチ Early 2017 ファンの交換.

I would also check the connections given the fact you might have disconnect it if you took the logic board out. What Thermal paste did you use and did you over do it, getting paste onto the green chip carrier components (a common issue).

Here’s the needed part if the fan has failed fully MacBook Air 13" (Late 2010-2017) Fan

Thats not to say thats your only problem! We need to solve this first.

MacBook Air 13" (Late 2010-2017) Fanの画像

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MacBook Air 13" (Late 2010-2017) Fan

$29.99

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I have reinstalled the fan multiple times and Mac Fan controller says the fan is running at 0rpm. I am going to replace the fan because it may have failed. I did not take the logic board out of the MacBook. The thermal paste I used for the CPU was Arctic Silver 5. I don’t think there are any problems with the logic board. I think the I/O board is fried because it does not want to charge or the I/O board connecter is broken so I am going ahead and replacing both these components (just to be safe). Could the SMC be affected by the failing I/O board.

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@Krishay P - SMC should be fine as its reporting the errors.

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Final question is it is going to be fine if reinstall the parts above right. I have checked all of the connections but these parts are not working still @danj

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@Krishay P - I can't answer that yet as you first need to replace the fan. Have you done that?

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I just ordered the fan and going to have to wait couple days

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Krishay P さん、ありがとうございました!
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