Introduction

Please keep in mind that correctly cleaning your logic board after a liquid spill may NOT solve your issue, even one failed capacitor or broken solder joint can be the end of the road for the average DIYer.

However in some cases this process will pave the way for a complete MacBook restoration.

  • Your first step is to remove your MacBooks main Logic Board, this process will very from model to model and the guides are readily available on iFixit. For this example we will be disassembling an A1502 MacBook Pro w/ Force Touch.

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Next, we are going to remove the heat sink and thermal paste.  Again this step will very slightly from model to model but is important to ensure proper cleaning. Next, we are going to remove the heat sink and thermal paste.  Again this step will very slightly from model to model but is important to ensure proper cleaning.
  • Next, we are going to remove the heat sink and thermal paste. Again this step will very slightly from model to model but is important to ensure proper cleaning.

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Place the MLB on a lint free towel and begin to carefully remove any visible corrosion with a tooth brush and  99% Isopropyl alcohol. AT this point I would take pictures of the affected areas before cleaning so you have an idea of where to start diagnostics once the board has been cleaned.
  • Place the MLB on a lint free towel and begin to carefully remove any visible corrosion with a tooth brush and 99% Isopropyl alcohol. AT this point I would take pictures of the affected areas before cleaning so you have an idea of where to start diagnostics once the board has been cleaned.

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  • Placing the board in an ultrasonic bath for 15 minutes at 40c with some type of electronics safe detergent will ensure that corrosion that is not visible to the naked eye will be removed. Electricity is the catalyst for corrosion, even a small amount left untreated can come back to bite you. In my opinion a toothbrush and alcohol alone is risky.

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Place the logic board in a shallow bath of 99% alcohol for a few minutes to displace the water from the ultrasonic bath. Use canned air or and electric air gun to blow the board dry.
  • Place the logic board in a shallow bath of 99% alcohol for a few minutes to displace the water from the ultrasonic bath. Use canned air or and electric air gun to blow the board dry.

You can get 99% at some pharmacies, or at Walmart.

anon - Reply

Why not just remove the battery, HD, optical drive, and fans (oiled bearings?) and then dunk the lower case? Pour it over the keyboard the same way the water got in. If you do it very soon after spilling water on it. How quickly does corrosion on this sort of metal occur?

anon - Reply

If you have  a stereo microscope you should go over the board to look for damaged components or broken solder joints.  If no microscope is available this would be a good time to loosely reassemble the unit and see if you have a good result.  If the unit has visible issues board level you may want to consider finding a professional  repair option.
  • If you have a stereo microscope you should go over the board to look for damaged components or broken solder joints. If no microscope is available this would be a good time to loosely reassemble the unit and see if you have a good result. If the unit has visible issues board level you may want to consider finding a professional repair option.

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  • Like we said in the beginning, getting the MLB up and running is likely one of several steps required to restore a MacBook after a liquid spill. We hope this guide was helpful, Good Luck.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Forza Vale

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The new mbpro has the logic board completely attached to the case along with the battery. Would it be possible to put submerge the entire thing in ultrasonic bath? or is that just going to destroy it?

Calvin Chong - Reply

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