If your iMac 24-inch (Apple silicon) needs logic board repair, our London technicians can help, usually with a quote on the same day you bring it in.
The logic board sits in the chin and holds the chip, memory and storage. We repair power, charging and board faults at component level. We also check the external power adapter, which can look like a board fault when it fails.
The power adapter connects magnetically and on some models carries Ethernet. When there’s no power, we test the adapter first, because it’s a cheaper fix.
About this model: The colourful 24-inch iMac with M1, M3 or M4 is only 11.5mm thick, with the logic board in the chin and an external power adapter that connects magnetically (with Ethernet on some models). The display is glued, storage is soldered, and there’s very little inside to fail.
Signs it needs logic board repair
- No power
- Won’t boot
- Board shorts
- Faults after a power surge
How we do it
Our logic board work is component-level. We inspect the board under a microscope, measure the power rails, use thermal imaging to find shorts, and work from the board schematics to identify the exact failed component. We then replace that component by micro-soldering rather than swapping the whole board.
At a glance
| Years | 2021–2024 |
|---|---|
| Processor | Apple M1, M3 or M4 |
| Storage | Soldered to the logic board |
| Memory | Unified memory inside the chip package (not upgradeable) |
| Power / charging | External magnetic power adapter |
Before you bring it in
Describe exactly what the Mac does when you press the power button: lights, sounds, fans or nothing at all. Mention any recent spills, drops, updates or power cuts. Don’t let anyone replace the board if you need your data: on this model, the data goes with the original board.
Which model do you have?
This page covers the iMac 24-inch M1, M3 & M4 (2021–2024) (iMac21,1 / 21,2 / Mac15,4 / 15,5; A2438, A2439, A2873, A2874 and 2024 M4 models). About This Mac in the Apple menu shows the model and year; the A-number is printed on the underside of the stand. Not sure? Bring it in and we’ll identify it for you.
Price
Non-complex board repairs from £165 + VAT; complex repairs (liquid, lightning or GPU faults) from £285 + VAT. The initial assessment and advice are free, as long as we don't need to open your Mac. If a technician needs to open it and spend time diagnosing the fault, or you need a report for an insurance claim, it is booked in as a diagnostic at £45 + VAT (£54). All prices are subject to inspection, and nothing is done without your approval.
Questions we’re often asked
How long does a board repair take?
Most take a few working days, including testing. Complex liquid damage can take longer, and we keep you updated.
Is there a warranty?
Yes, our repairs come with a warranty on the work and parts. Ask us for the terms that apply to your repair.
Book a repair
Call 020 7394 2528 or email info@mac-repair.london with a short description of the fault and we’ll come back with a quote.