MacBook Pro 16-inch M4 Pro and M4 Max 2024 Diagnostic: Not Turning On or Liquid Damage

4.7★★★★★· 623 Google-reviews

A MacBook Pro 16-inch M4 Pro and M4 Max 2024 diagnostic is £49.99. We find out why your MacBook (A3403, A3186) will not turn on, has had liquid on it or has a fault you cannot pin down, then give you a fixed quote before any repair. Logic board, liquid damage, data recovery and SSD work are quoted this way. Diagnosis usually takes 1-2 working days, then a fixed quote.

All MacBook Pro 16-inch M4 Pro and M4 Max 2024 repairs · Diagnostic

2Problem
3Price & booking

MacBook Pro 16-inch M4 Pro and M4 Max 2024A3403 / A3186

We can fix this

Diagnostic

MacBook Pro 16-inch M4 Pro and M4 Max 2024 · A3403 / A3186

Prijs

£49.99

We find the fault, then give you a fixed quote. Nothing else is done without your OK, and if you go ahead the diagnostic fee comes off the repair.

Garantie: 12-month warranty on parts and labour
Turnaround: 1-2 working days once we have it; Same day only with our paid priority service.

How will we get it?

Total

£49.99

Ondertekent uw MacBook Pro 16 M4 heeft dit nodig

No power: nothing on screen, no chime, no lights, even on the charger
Liquid was spilled on it, even if it seems to work now
It restarts on its own, or shows a flashing folder or a circle with a line through it
A fault you cannot name, or one that comes and goes

Wat veroorzaakt het

A failed power component on the logic board, or a short after liquid
Corrosion spreading slowly after a spill
A dead battery or charging fault that looks like no power

Hoe wij het oplossen

We test power, the battery and the charging circuit with bench equipment
We open it up and inspect for liquid, corrosion and damage
We tell you what is wrong, what it costs to fix and how long it takes
Nothing else is done without your OK

In één oogopslag

Prijs: £49.99
Typical turnaround: 1-2 working days, then a fixed quote
Garantie: 12-month warranty on parts and labour
Model: A3403 / A3186
Hoe: UK mail-in with a prepaid Royal Mail label, or London drop-off by appointment
Extra reparaties: 10% off each extra repair in the same order

How it works

Five steps, start to finish. You always know where your MacBook is and what happens next.

Pick your model and the problem
Find your MacBook by the A-number on its underside and tell us what it's doing. You see the fixed price straight away.
Book and send it in
Mail it in from anywhere in the UK with a prepaid Royal Mail QR label (nothing to print, post it at any Post Office), or drop it at our SE15 workshop by appointment. London courier collection is coming soon.
We check it in and confirm the fault
We test it when it arrives. If it needs something different from what you booked, we quote that first and do nothing until you say yes.
Repair and test, with photos and videos
We fit the part and test it before it goes anywhere, and send you photos and videos of the work, so you see what we see.
Tracked back to you
It comes back tracked, with a 12-month warranty on parts and labour.

Rated 4.7 on Google

From 623 reviews

12-month warranty on parts and labour

On every MacBook repair

Photo and video updates

While it's on our bench

No surprise charges

Anything extra is quoted first

Other MacBook Pro 16-inch M4 Pro and M4 Max 2024 repairs

All MacBook Pro 16-inch M4 Pro and M4 Max 2024 repairs →

Same repair, other MacBooks

Veelgestelde vragen

What should I do straight after a liquid spill?

Switch it off, unplug it and do not charge it or try to turn it on again. Turn it upside down in a tent shape to drain, and book a diagnostic as soon as you can: corrosion keeps spreading while liquid sits on the board, even if it seems fine.

Can you recover my data?

Often, but it depends on the fault: on most MacBooks the storage is soldered to the logic board, so the data lives on the board. Tell us your data matters when you book, and the MacBook Pro 16 M4 diagnostic will cover what can be recovered before we quote.

Hoe krijg ik mijn MacBook Pro 16 M4 voor jou?

Post it to us from anywhere in the UK: add a prepaid Royal Mail label at checkout and you get a QR code to show at any Post Office, so there is nothing to print. A MacBook always goes as a Medium parcel; pack it in a padded box with at least 5 cm of padding all round and leave the charger at home unless we ask for it. We post it back tracked. In London you can also drop it off at our workshop by appointment.

Is the diagnostic covered by a warranty?

Yes: a 12-month warranty on parts and labour, the same as every OG Repairs repair. The warranty covers the work we did and the parts we fitted; it does not cover new accidental or liquid damage, or normal battery wear over time.

Will I lose my data, and do you need my password?

A repair like this does not touch your files, and for most hardware repairs we do not need your password: Apple Diagnostics runs before anyone signs in. Back up with Time Machine before you send it anyway, as you would before any repair. If a test ever needs a login, we ask you to set up a temporary account rather than share yours.

Reviews

What our repair customers say

Real Google reviews from people whose consoles and controllers we've repaired. MacBook repairs are new here, so there are no MacBook reviews yet, and we won't make any up.

Rob Durkin★★★★★
Was suffering from stick drift on my PS5 controller so sent it in to OG Repairs for an upgrade to the TMR Gulikit sticks. Photos showing the upgrades, a video pre-upgrade confirming stick drift, then a video post-upgrade showing it was gone. Very impressed and will return.
D1★★★★★
Quick repair - the DualSense comes back with a second life! Love them sharing photos and videos about the repair as well. Thanks OG Repairs.
Sarah W★★★★★
Absolutely quality repair team. They were quick and efficient with the way they repaired my controller. The video and picture of it being repaired was also a nice touch - definitely would choose them again.
OG customer★★★★★
Outstanding work - sent in my PS5 controller for a stick drift repair and TMR upgrade. It's phenomenal, feels brand new. Highly recommend.

4.7 out of 5 from 623 Google reviews · Read all our Google reviews →