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A1706 / EMC 3071 – sorti en novembre 2016, ce MacBook Pro 13" présente le Touch Bar avec écran OLED. Il inclut un processeur Intel Core i5 dual-core "Skylake" et quatre ports Thunderbolt 3.

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Advice for cleaning motherboard from water damage?

I’ve opened it up and definitely see some corrosion (also it doesn’t turn on).

I got this advice from a Apple discussion board post (https://discussions.apple.com/thread/250...):

“Put a little bit of Isopropyl Alcohol onto the corrosion and let it sit a minute or two before using the toothbrush to very gently brush it clean. Do not press on the toothbrush or you will likely break the very small and delicate surface mount components from the board.

Blow some compressed air across the area to push out any alcohol which may be trapped beneath the components. Let the board sit an hour to let any remaining alcohol evaporate.

Make sure to disconnect the battery from the Logic Board before performing this procedure.”

Anything to add? Also, should I take out the board and clean both sides of it?

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Arg, I need a T3 driver!!

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Hi @idikiy ,

Here’s the ifixit Electronics Water Damage guide which details what needs to be done with water damaged electronics.

Be sure to use Isopropyl Alcohol 99%+ (available from electronics parts stores) and not “rubbing alcohol” as most only contain 70% IPA or less, can contain additives and are not as effective at removing the corrosion. Usually IPA 90% and over is suitable

Remove any shields that may be covering any components as the water may have got in under them as well and brushing may be required to remove any corrosion that may be there. Also disconnect and clean any cable ends, cable connectors etc

It would be wise to check both sides of the board just to be sure.

It may be a pain to completely disassemble everything and check, but in the long run it may be better to make sure that everything was cleaned etc and not just assume that all is OK

Here are the ifixit MacBook Pro 13" Touch Bar 2016 guides that may help.

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Thanks! Very helpful. Is there a specific reason that isopropanol is recommended over ethanol?

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HI @idikiy

The problem with using Ethanol is that it can sometimes leave oil traces on the surface it evaporates from, unless the purest form of Ethanol is used.

Isopropyl Alcohol evaporates more rapidly than Ethanol and it does not leave any traces of oils upon evaporation.

I'm not sure but for the average DIY repairer I think that pure IPA (99%+) is easier to obtain than pure Ethanol, but I might be wrong about this.

Cheers

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I think you're right, I think 99% (or even 90%?) ethanol is highly controlled unlike IPA.

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Igor Dikiy sera éternellement reconnaissant.
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