Microsoldering & logic board
Logic board repair at chip level: no power, no charge, no image, boot loop.
MacBook & iMac repair
MacBook and iMac repair in Barcelona
From a battery swap to a Mac that shows no sign of life. We diagnose it, give you a fixed price and, when it’s needed, repair the logic board instead of replacing it. We’re at Fontanella 14, next to Plaça Catalunya.
4,6 out of 5 · 138 reviews on GoogleComponent-level repair · Quote before we touch anything
Why BestFixing
Free initial diagnosis
We take a look at no charge and tell you what the symptom points to. If it needs opening up and measuring on the board, we tell you before we do.Fixed quote
You know the price before we touch anything. If something else shows up inside, we stop and call you.We fix what others turn down
Our own microsoldering lab: microscope, schematics and chip-level soldering instead of writing the device off.Right in the centre
Fontanella 14, one minute from Plaça Catalunya. Entrance at Carrer de les Moles, 38.
What’s your Mac doing?
Find the symptom closest to yours: we tell you what it usually points to, what not to do in the meantime and which repair it belongs to.
7 symptoms
It won’t start: no light, no fan, no sound
What it usually is. A Mac that gives no sign at all when you press the button is almost never a software problem. It’s usually power: the charger, the charging line, or a component on the board stopping the internal supply from coming up.
What not to do in the meantime. Don’t try borrowed chargers of dubious origin or chain resets for hours: if there’s a short, every attempt heats the same spot. And if it also got wet, don’t switch it on.
I can hear it start up but the screen stays black
What it usually is. If the fan spins, the keyboard lights up or it answers the startup chime, the computer is running and what has failed is the picture: backlight, display cable or the panel itself. On some MacBook Pro models it’s a well-known cable that wears out from opening and closing the lid.
What not to do in the meantime. Don’t keep opening and closing the lid to see whether it comes back: if the display cable is the problem, every open brings the moment it breaks for good a little closer.
I spilled liquid on it
What it usually is. Coffee, beer and sparkling water are far worse than plain water: they leave sugar and salts that keep corroding the board for weeks. The repair is to open it, clean it and neutralise the residue before the corrosion reaches the chips.
What not to do in the meantime. Don’t switch it on or plug in the charger to see whether it still works: that’s what burns the board. Don’t stand it on a radiator or point a hairdryer at it. Hold the power button until it shuts down, leave it open and face down, and bring it in quickly.
Some keys don’t respond, repeat themselves or feel wrong
What it usually is. On MacBooks with the butterfly keyboard (2015-2019) a single speck of dust under a key is enough. On later models it’s usually the module or the ribbon that connects it. When keys that sit far apart fail at the same time, that points at the controller.
What not to do in the meantime. Don’t blast it with compressed air or lever the keycaps off with a knife: the clips on those keyboards snap the moment they are forced, and a broken key means replacing more than needed replacing.
It won’t charge: the charger does nothing, or the port gets hot
What it usually is. It can be the cable (both MagSafe and USB-C cables break inside), the port, or the charging line on the board. No light on the charger doesn’t mean the charger is the problem.
What not to do in the meantime. Stop using a charger that sparks, gets hot or has a frayed cable, and don’t charge through a port that has gone loose or scorched: at that point it isn’t just the port, it’s what sits behind it.
It shuts down on its own, or the trackpad no longer clicks
What it usually is. A trackpad that stops clicking is the classic sign of a swollen battery: the battery sits right underneath and pushes up. Shutting down without warning points at the same thing, or at a battery that can no longer deliver current.
What not to do in the meantime. Stop charging it and don’t carry it squeezed between books in a backpack. A swollen battery doesn’t deflate, and punctured it burns: don’t pierce it or try to lever it out.
It starts up with a question mark folder or a no-entry sign
What it usually is. The Mac powers on but can’t find a system to boot from. It can be the drive, a damaged system or, on Macs with storage soldered to the board, a board fault. The urgent thing here isn’t getting it to boot: it’s the data.
What not to do in the meantime. Don’t reinstall macOS and don’t use Disk Utility to repair or erase the drive: that’s the fastest way to lose for good what could still be recovered. Shut it down and leave it off until somebody looks at the drive.
We couldn’t find that symptom in the list. Tell us in your own words and we’ll get back to you.
Tell us on WhatsAppThis is guidance based on the symptom, not a diagnosis: until the device is opened and measured, nobody can tell you for certain what’s wrong. The initial diagnosis is free and the quote is fixed before we touch anything.
What we repair
The Mac won’t turn on
No light, no sound, no image, or it dies after a few seconds. We measure the power rails on the board to find out whether it’s the charger, the battery, the connector or a board fault before quoting anything.
MacBook battery replacement
Runtime collapsing, a “Service Battery” warning, or a swollen battery lifting the trackpad. A swollen battery is urgent: it deforms the case and can end up damaging the board.
Broken or faulty display
Cracked glass, lines, blotches, backlight that won’t come on, or the well-known stage light effect. We assess whether the whole panel needs replacing or only the affected module.
Keyboard and trackpad
Keys that repeat or don’t respond, a temperamental butterfly keyboard, or a trackpad that no longer clicks. We check whether the fault is the module itself or its flex cable.
Liquid damage
Coffee, water or wine over the keyboard. The less you try to power it on, the better. We strip it down, ultrasonically clean the board and repair the corroded lines before the corrosion spreads further.
Logic board and microsoldering
Short circuits, burnt charging ICs, graphics controllers, severed traces. We repair the board at component level instead of charging you for a whole new one.
SSD and RAM upgrades, disk cloning
On models that still allow it, more storage or memory is the best value upgrade there is. We clone your system so you get it back exactly as you left it.
Data recovery
A Mac that won’t boot, a drive that won’t mount, or an accidental deletion. Before any repair we always try to secure your files first.
Shuts down or restarts without warning
Sudden power-offs, restart panics, or a Mac that hangs on the same task every time. We rule out software and peripherals first, then measure the board under load to see which rail drops.
Fans at full speed and a lot of heat
Packed dust, dried thermal paste or blocked vents leave the machine permanently hot and loud. It’s a clean-up that costs little and saves years of high temperatures wearing on the board.
USB-C or Thunderbolt ports that do nothing
A port that has stopped charging or recognising accessories has usually taken a surge or is full of compacted debris. We test port by port and, if the damage is on the board, that’s where we repair it.
It powers on but macOS won’t boot
A folder with a question mark, a prohibitory sign, a grey screen or a boot that stalls halfway. It can be the system, the drive or the board, and the right order is to secure the data before anything else.
The charger shows no light, or nothing charges
Charger, cable, MagSafe or USB-C port and the charging circuit on the board are four different things. We check them in that order, with a bench supply, before suggesting any part.
Camera, speakers and microphone
A camera missing from video calls, distorted sound, or a microphone that picks up nothing. Usually the module or its flex, but it can also be the audio circuit on the board.
Damaged hinges, lid and casing
A lid that no longer closes flush, a stiff hinge or a dented chassis. Beyond the obvious, a deformed chassis puts the display and its video cable under tension, so it’s worth fixing before it breaks something else.
Touch ID doesn’t recognise your fingerprint
The button still powers the Mac on but no longer reads fingerprints, or you get asked for the password at every boot. The sensor is paired to the board, so we first check whether the fault is the flex or the line.
Wi-Fi or Bluetooth dropping out on their own
The network vanishes when you move the lid, or the mouse and keyboard cut out every few minutes. It’s usually an antenna pinched at the hinge, or the module — not macOS.
Patches worn into the display’s anti-reflective coating
Bare areas around the keyboard or in the middle of the panel, obvious against the light. We assess whether the coating can be treated or the panel needs replacing, depending on how far it has spread.
Ten minutes well spent before you come in
If your Mac shows no sign of life, there are checks you can run at home with no risk at all, and now and then they solve the problem outright: try a different charger and a different cable, watch whether the charger indicator changes colour when you plug it in, and tell a machine that’s off apart from one that’s on with no image — in a dark room you can see whether the backlight lifts at all. Then leave it unplugged for a while before pressing the power button again. If it still won’t start after that, the next step is measuring, and that part belongs here.
Real diagnosis, not parts roulette
Repairing a Mac by substitution — swap the board, swap the display, swap everything until it works — is expensive and usually unnecessary. We measure instead: power rails, data lines, start-up signals. That diagnosis is what lets us say “it’s the charging IC” rather than “it’s the board, that will be several hundred euros”.
Three warnings not to ignore
A swollen battery. If the trackpad has stopped clicking or the lid no longer closes flush, the battery is almost certainly swollen. Stop charging it and bring it in.
Fans at full speed all the time. Usually dust and dried thermal paste. It’s cheap to fix and it saves years of high temperatures that eventually take their toll on the board.
Any liquid at all. Even if it seems to work. A Mac can keep booting for weeks and then die later, once corrosion has eaten through a trace.
Your data comes before the repair
If the Mac won’t boot and there’s work inside with no backup, tell the technician the moment you walk in. On Apple silicon Macs the SSD is soldered to the board, so the order of operations matters: first we secure whatever can be recovered, and then we talk about the repair. Details on data recovery.
The repairs others turn down
If you’ve been told your Mac “can’t be fixed” or that the whole logic board needs replacing, bring it in for a look. Our microsoldering lab exists for exactly that.
What we check before quoting
On a Mac the initial diagnosis follows a fixed order, because “it won’t turn on” and “it won’t boot” are entirely different faults:
- Power: how much current the machine draws with the charger connected, and whether it draws anything at all. That’s what separates a dead board from a boot failure.
- Charger and port: tested with a bench supply and a known-good charger, because a worn cable imitates a serious fault perfectly.
- Battery: cycle count, charge state, and whether it’s swollen or deformed.
- Video: backlight, panel and output to an external monitor, to tell a display problem from a power problem.
- Signs of liquid: corrosion on the connectors and on the board, even when the machine appears to work.
The initial diagnosis is free. When the symptom means stripping the machine down and measuring the board under a microscope, that’s an in-depth diagnosis: it carries a cost, and you’ll know it before we start.
What the 12-month warranty covers
Every repair comes with a 12-month warranty on the part we fit and on the labour. On a Mac that means that if the new battery loses runtime abnormally, if the keyboard fails again on the same key, or if the board rail we repaired drops again from the same cause, it’s put right at no charge. It doesn’t cover later knocks or spills, nor a different fault elsewhere in the machine.
And if it isn’t worth repairing?
We’ll tell you. A battery, a thermal clean-up or an SSD on a Mac a few years old usually pays for itself several times over; a display plus a board on a machine that no longer gets new macOS versions often doesn’t. We run the numbers with you and you decide.
Models we work on
- MacBook Air and MacBook Pro with Apple silicon (M1, M2, M3, M4 and later)
- Intel-based MacBook Air and MacBook Pro
- iMac and iMac Pro
- Mac mini, Mac Studio and Mac Pro
- 13-inch and 15-inch MacBook Air with M4 chip
- 14-inch and 16-inch MacBook Pro with M4, M4 Pro and M4 Max
- 14-inch MacBook Pro with M5 chip
- Older models: ask us about parts availability
We’ve written separately about a few of these models, because there’s a quirk worth knowing before you repair them: MacBook Air 13″ (no Retina), MacBook 12″ (Retina), MacBook Pro 13″ (Intel) 2016–2017, MacBook Pro 13″ (Intel) 2018–2020, MacBook Air 13″ (M1), iMac 27″ (Intel) and Mac mini (Intel) 2018.
How we work
Every fault is different, and the price depends on the model and the actual condition of the device. The initial diagnosis is free, and the quote is fixed before we touch anything.
- 01
Tell us about it
On WhatsApp, by phone, or just drop in. Give us the model and the symptom and we can already point you in the right direction.
- 02
We diagnose it
The initial diagnosis is free. If the symptom means stripping it down and measuring the board, we tell you what that costs before we touch it.
- 03
We give you a price and a date
A fixed quote and a real timeframe, before we touch anything. You decide whether to go ahead.
- 04
We repair and test
Repair, reassembly and testing before you get it back, with a written 12-month warranty on the part and the labour.
Reviews
4,6 out of 5 · 138 reviews on Google
5 out of 5 stars
Una actualización del sistema operativo de mi antiguo MacBook air muy rápida y eficiente. Leo me atendió muy bien e incluso me entregó el mac a domicilio porque no habían podido coincidir. Muy recomendable.
Federica MastrulloGoogle ·5 out of 5 stars
Leonardo helped me install Windows on my Macbook and was a great help! 10/10 service, everything was handled with care and very professional service. Gracias Leonardo!!
Heba El AyoutyGoogle ·5 out of 5 stars
Atención cercana y rápida. Dando más posibilidades que en una tienda oficial, me han ayudado a alargar la vida del portatil. Comprometidos han reparado mi ordenador hasta el final!
Gemma Simón i MasGoogle ·5 out of 5 stars
Great service. Decent pricing, and 1 year warranty. Repaired my mac flawlessly.
Tomas RamoskaGoogle ·
Frequently asked questions
My MacBook won’t turn on. Can it be fixed?
In most cases yes. “It won’t turn on” is a symptom, not a diagnosis: it can be the charger, the port, the battery, the charging IC or a power rail on the board. We measure it and tell you exactly which one before quoting.
Do you repair the logic board or replace it?
We repair it. We have a microsoldering lab, so we work at chip and trace level. Replacing the whole board usually costs almost as much as the machine is worth, and very often it’s simply not necessary.
I spilled liquid on my MacBook. What should I do?
Don’t turn it on and don’t plug it in, and skip the rice and the sunny windowsill. Shut it down, stand it upside down like a tent and bring it in as soon as you can. Corrosion advances every hour and that’s what really kills the board.
Can I lose data during the repair?
On Apple silicon Macs the storage is soldered to the board, so on board repairs we always talk to you first. If the data is the priority, we start there. And if you have a backup, bring it done.
The battery is swollen. Is that dangerous?
Yes, and it isn’t worth putting off. A swollen lithium battery presses on the trackpad and the case, and in extreme cases it can be punctured. Avoid charging it, don’t carry it in a tight bag, and bring it in to be checked.
Is it worth repairing an older Mac?
It depends on the fault and the model. A battery or SSD replacement on a five-year-old Mac usually pays off handsomely. If the display has failed and the board has too, we give you the real numbers so you can decide sensibly.
What warranty comes with a Mac repair?
12 months on the replaced part and on the labour for that repair, from the invoice date. If the fault we repaired comes back from the same cause, we resolve it again at no charge. A later knock or fresh liquid damage is a different matter, and we’ll say so plainly.
Can the RAM or SSD in an Apple silicon MacBook be upgraded?
No. On Apple silicon Macs the memory is part of the chip itself and the storage is soldered to the board, so there is no upgrade path. On older Intel models there is, and there an SSD or RAM upgrade is still the best value per euro you can spend.
The fan runs flat out and the Mac feels slow. Can that be fixed?
Almost always, and it’s one of the least expensive things we do. Compacted dust in the heatsink and dried thermal paste make the machine run hot, throttle down and sound like a hairdryer. An internal clean and fresh paste change its behaviour completely.
My Mac boots to a folder with a question mark. What does that mean?
That it can’t find a system to start from: it may be the system, the drive or the board. If there is work inside with no backup, say so when you arrive, because it changes the order in which we do things.
What should I bring with the machine?
The charger, especially if the symptom involves charging, and your account password so we can test the machine afterwards. If you would rather not leave it, we run those tests with you present at collection.
Do you also repair iMac, Mac mini and Mac Studio?
Yes, desktops as well as laptops, Intel or Apple silicon. On an iMac the display has to come off to reach the board, so it’s a more laborious repair, but it’s done here all the same.
How much does a MacBook repair cost?
It depends on what failed and on the model. A battery or an internal clean sit in a completely different bracket from a screen or a board-level repair, and on Apple silicon machines some parts cost more than on the equivalent Intel models. We check it over, tell you exactly what’s wrong and give you a fixed quote before we start.
How long does a MacBook repair take?
It depends on the fault and on whether the part is available. A battery swap or an internal clean are among the quickest jobs we do; a board-level repair takes longer, because the slow part is the diagnosis, measuring until we find the component that’s failing. We confirm the exact timeframe when we give you the quote, once we know what it has.
Several keys have stopped working. Does the whole keyboard need replacing?
Not always. First we work out whether the problem is one key, the connecting flex cable or the keyboard as a whole, and whether liquid was involved, because that changes the whole order of work. On a good number of MacBooks the keyboard is riveted to the top case, so a full replacement is expensive and it’s worth ruling out the cheaper options first.
My MacBook won’t charge even though the charger is plugged in. What should I check?
Try another charger and another cable, and look for dirt or scorch marks in the port. If nothing changes, there are four suspects: charger, cable, port and the charging circuit on the logic board. We test them in that order on a bench supply, because replacing the wrong part is the most expensive mistake with this fault.
Other services
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Photos and documents from dead devices, damaged drives or accidental deletion.
iPhone repair
Screen, battery, camera, charging port, liquid damage and back glass.
Shall we take a look?
Tell us what’s wrong and we’ll tell you what it is, what it costs and how long it takes. No obligation, and the initial diagnosis is free.
4,6 out of 5 · 138 reviews on GoogleCarrer de Fontanella, 14, bajos · 08010 Barcelona — or drop by Fontanella 14, next to Plaça Catalunya