Turn the MacBook off, unplug the charger and leave it off. Coffee leaves a film on the parts inside that carries power where it should not go. It needs to be opened and cleaned within a day or two.
What should I do right now?
Do these four things in order.
- Hold the power button until the screen goes black.
- Pull out the charger and anything else that is plugged in.
- Wipe the keyboard and edges with a towel.
- Leave it off. Do not charge it and do not try to start it.
Is coffee worse than water?
Black coffee is about as easy to fix as water when it is caught fast. Milk and sugar make it harder.
| What was in the cup | How hard it is to fix | Why |
|---|---|---|
| Black coffee or tea | Easiest | It is not very acidic, so it does less harm if cleaned fast. |
| Coffee with milk | Harder | Milk leaves solids behind on the parts. |
| Coffee with sugar or syrup | Harder | Sugar dries into a sticky layer that has to be washed off. |
It still worked after the spill. Is it fine?
No. A MacBook can keep running for a while after a spill, and then stop. The job below ran for about ten minutes before the screen went black. That coffee had both milk and sugar in it.
What does a real coffee repair look like?
This is a job I did on a MacBook Air from Castle Hill.
| Model | MacBook Air 13-inch M1 (A2337, 2020) |
| What happened | About 150 ml of coffee with full cream milk and two sugars went across the left side of the keyboard. It ran for about ten minutes, then the screen went black. It came in about 18 hours later. |
| What the owner tried | Restarting it several times and plugging in the charger. Nothing happened. |
| What I found | Dried coffee around the charging port, the keyboard connectors and parts of the logic board. Three small power parts had corroded. |
| What I did | Took the logic board out and cleaned it. Replaced the three damaged parts. Cleaned the charging port contacts. |
| Result | It starts and charges from both ports. The files were all still there. It did not need a new logic board. |
| Cost | $395 |
The logic board is the main circuit board that runs the Mac. Corrosion is damage that works like rust on its tiny metal joints. The three parts were two capacitors and one resistor, which are small parts that control the flow of power.
What made this job harder?
Two things made it harder.
- The milk and sugar had dried into a sticky layer under parts that sit very close together. It was harder to wash off than plain water marks. Dried coffee can also carry power, so a part can look dead when it is only dirty. I tested each one so I did not replace good parts.
- The charger had been plugged in after the spill. That sends power through wet parts and speeds up corrosion, so the charging port needed extra care.
What does it cost to fix?
This job cost $395 in total and took 2 working days. No $150 was added on top, because the owner went ahead with the repair. I charge $150 to open, clean and check a wet MacBook, and that comes off the repair if You go ahead. A logic board repair like this one is $290 to $550. You get the price before any work starts.
Apple charges A$429 for liquid damage if You have AppleCare+. Without it, Apple gives a price only after it has looked at the Mac.
Will my files be safe?
Often, yes, if the logic board can be saved. On this model the storage is part of the logic board. Saving the board saved the files, and nothing had to be copied or restored.
What should I not do?
- Do not put it in rice. Apple says small grains can get inside the Mac.
- Do not use a hair dryer or heater. Apple says not to use heat.
- Do not plug in the charger to test it. In the job above, that added to the risk.
When should I get help?
Get help the same day if You can. Coffee is easiest to clean before it dries hard. The Mac in the job above came in about 18 hours after the spill and was saved.
For other Mac repairs in the area, see Mac repair Castle Hill. See prices and four real repairs on the MacBook water damage repair page. For the first steps in more detail, see what to do in the first 10 minutes.
Give me a call or send a few photos of what happened … happy to have a look!!