If you just spilled water on your MacBook, the next ten minutes decide how much it costs to save. Power it off, unplug the charger and everything else, flip it tent-style over a towel, and do not turn it on or charge it. Then bring it to us on Telegraph Avenue in Berkeley for an $89 water-damage diagnostic — we clean and repair the logic board at the component level under a microscope, then confirm a price before any repair work begins. Same-day intake may be available when the schedule allows; the sooner the board stops sitting wet with power on it, the better your odds.
Liquid-damage machines are our single most common MacBook diagnostic intake — more than thirty since the start of 2025. Most of them arrive after the owner did the one thing that makes it worse: tried to turn it back on to "check if it still works." Here's the right sequence, and why.
The four things to do right now
1. Power it off — hold the button until it's fully dead
Don't tap the power button and hope. Hold it for five to ten seconds until the machine is completely off. Power is what turns a wet board into a corroding board, so cutting it fast is the whole game.
2. Unplug the charger and every accessory
Pull the MagSafe or USB-C charger, and unplug drives, dongles, and anything in the ports. You want zero power reaching the board — electricity is the catalyst for the corrosion that eats the copper traces.
3. Flip it tent-style over a towel
Open the lid partway and stand the MacBook upside down in an inverted "V" on a dry towel, so gravity drains liquid away from the logic board and out through the keyboard and vents instead of pooling deeper inside. Wipe off any liquid you can reach.
4. Do not charge it and do not power it on — and skip the rice
Leave it off. Every time the board gets power while it's wet, corrosion spreads and shorts can kill components for good. And rice is a myth — it absorbs moisture slowly and poorly, and the dust and starch can get inside and make things stickier, not drier. The only real fix is opening the machine and cleaning the board properly.
What's actually happening inside at 24, 48, and 72 hours
The damage from a spill isn't the water — it's what the water starts. When liquid bridges the board and there's any power present, even from the battery with the machine "off," you get electrolytic corrosion: current flowing through the liquid combines with the metal, water, and oxygen to turn refined copper, aluminum, and iron into their oxides. Those oxides don't conduct the way the original traces did. Connections weaken, resistances shift, and eventually something that used to work stops.
That process starts immediately and keeps going as long as power and moisture are both present. It's also why a machine can seem fine for a while — the same iFixit guide notes a Mac can "function normally for days or weeks" before a corroded joint finally fails. The clock is running the moment liquid hits the board, which is why fast, correct first aid matters more than anything a shop can do later.
Why "it still works" is the dangerous part
The most common thing we hear is "but it turned back on and seemed okay." That's not evidence the machine is safe — it's evidence the corrosion hasn't reached a critical point yet. Sugary and salty drinks make this worse: coffee, soda, beer, and wine leave conductive, sticky residue and dissolved salts that keep bridging circuits and corroding long after the visible liquid has dried. A machine that "works" after a spill is a machine with a hidden countdown. Getting it cleaned before that countdown finishes is the difference between an $89 diagnostic plus a bench cleaning and a dead logic board.
What we do on the bench
Bring the machine in and the first step is the $89 water-damage diagnostic. We open it, disconnect the battery to kill the power source, and inspect the logic board under a microscope for corrosion and shorts. Where the board needs it, we clean it and do board-level microsoldering — repairing the specific damaged components and connections rather than swapping the whole board or writing the machine off. Then you get a confirmed quote for the actual repair before we do any of it. If a part change or a price change comes up mid-repair, we confirm it with you first — the standard we hold across every job.
This is the opposite of the whole-unit approach. Apple doesn't do component-level liquid repair; its remedy is a major parts swap — typically the logic board and top case — that can run well into four figures out of warranty. Component-level repair usually costs a fraction of that when the corrosion is caught in time.
"What about my files?"
For most people the real question isn't the laptop, it's what's on it. We run data-first: if there's anything you need off the machine, tell us at intake and we treat recovering it as the priority, not an afterthought of the repair. Board-level work often lets us bring a dead machine back to life long enough to get everything off even when the laptop itself isn't worth saving. Read the technical challenges of data recovery for how that actually works, and start a case on the data recovery page if the machine won't boot.
Come in fast
Bring it while the board is still savable. You can start an Apple laptop repair request online, or contact us to arrange same-day intake when the schedule allows — call ahead so we can reserve a bench time and get the machine open before the corrosion goes further.
FAQ
My MacBook turned on after the spill — is it fine?
Probably not, and "it turned on" is exactly the trap. Corrosion progresses quietly and a machine can run for days or weeks before a damaged joint fails. The safe move is to get it cleaned before that happens rather than waiting for a symptom.
Is coffee or beer worse than plain water?
Yes. Water can evaporate and leave little behind, but coffee, soda, beer, and wine leave sugars and dissolved salts that stay conductive and keep corroding the board after everything looks dry. Sugary and salty spills need a proper board cleaning more urgently, not less.
Will Apple fix liquid damage, and what does that cost?
Apple generally doesn't do component-level liquid repair — the remedy is a major parts swap, which out of warranty can run well into four figures. AppleCare+ may lower the covered incident price, but liquid damage is a race against corrosion and Apple's repair terms do not guarantee data integrity during service. Our comparison is local, immediate, and data-first: we disconnect power, clean and diagnose the actual board, prioritize your files, and quote the component-level repair instead of defaulting to a whole-assembly replacement.
How fast should I bring it in?
As fast as you reasonably can. The corrosion clock starts at the spill and runs while power and moisture are both present, so the machine you bring in today is more repairable than the same machine next week. Keep it off in the meantime.
More Berkeley MacBook guides: MacBook screen replacement prices by model, the student's guide to MacBook repair near campus, and why the best repair shop in Berkeley isn't the Apple Store.