9 June 2026 approx. 5 min read· By Ioannis Zachos

MacBook liquid damage: what to do and what to absolutely avoid

A glass of water knocked over. A cup of coffee spilled. It happens in a split second, and the panic that follows is completely understandable. At iMac and More we see MacBooks come in with liquid damage every week, and in practice we notice the same thing time and again: most people make their biggest mistakes in the first few minutes after the accident.

In this article we explain exactly what you should — and absolutely should not — do after liquid damage to your MacBook.

MacBook liquid damage — what to do after coffee or water gets on your MacBook

The biggest mistake: trying to switch the MacBook back on

After liquid damage, most people's first reaction is to check whether the MacBook still works. Understandable — but this is exactly what you shouldn't do.

When you try to start up the MacBook or plug it into the charger, current flows through the logic board. If any moisture is still present at that point — and it almost always is — the current can come into contact with the liquid and cause a short circuit. This can permanently damage components that would otherwise have kept working fine.

What starts out as repairable damage can become irreversible after a single attempt to switch it on.

What to do immediately

The first 60 seconds are crucial. The faster you act, the greater the chance of a successful repair:

Switch the MacBook off immediately — hold down the power button
Unplug the charger and remove any accessories straight away
Turn the MacBook upside down so the liquid can drain out
Do not dry it with a hairdryer — heat spreads the moisture further
Do not switch it back on — not even "just to test it"
Contact us as soon as possible or bring the MacBook in directly

Why waiting is dangerous

Many people assume that a MacBook will simply work again after a day or two of drying out. Unfortunately, that's a misconception we regularly come across in practice.

Moisture never fully dries out on the inside. Even if the MacBook feels dry on the outside, a residue of moisture always remains on the logic board. This moisture causes scaling, oxidation and corrosion on sensitive components. The longer you wait, the more damage the corrosion causes.

A MacBook that's switched on again after two days of drying out runs a far greater risk of permanent damage than one that's switched off immediately and cleaned professionally.

Is liquid damage always repairable?

Honest answer: not always. The chance of a successful repair depends on several factors — the type of liquid, the amount, how quickly you acted, and which components were affected.

What we do see in practice: the faster a customer acts, and the fewer attempts have been made to switch the MacBook back on, the better the chances of a successful repair. Customers who get in touch immediately get significantly better results than those who wait a couple of days first.

How does liquid damage repair work at iMac and More?

At iMac and More we always start with a thorough inspection. We open the MacBook, professionally clean the logic board and all components using specialised equipment, and inspect every part for damage.

Faulty parts are replaced exclusively with genuine Apple components sourced from donor MacBooks. We deliberately avoid cheap imitation parts — genuine Apple components offer the best reliability and lifespan.

A properly repaired MacBook can go on running trouble-free for years.

Does your MacBook still have residual value?

Yes. Even a MacBook with liquid damage retains some residual value. Whether or not a repair turns out to be possible, we'll give you an honest assessment of what your device is worth and what your options are. You may also be able to trade it in for a refurbished model from our range.

In short

Liquid damage is stressful but repairable in many cases — provided you act quickly and correctly. Switch it off immediately, disconnect it from power, and get in touch as soon as possible. Every minute counts.