We repair and upgrade the iMac 24-inch M3 (2023) at our workshop in Bermondsey, from power and start-up faults to storage upgrades and data recovery. The iMac 24-inch M3 is a 2023 all-in-one Mac with a 24-inch screen, identified by model numbers A2873, A2874. Storage and memory are both fixed to the board, which shapes what can be upgraded and how data is recovered.
- Model numbers
- A2873, A2874
- Model identifier
- Mac15,4, Mac15,5
- Released
- 2023
- Type
- All-in-one Mac
- Screen
- 24-inch
- Storage
- Soldered to the board
- Memory
- Unified memory, part of the chip
Repairs we carry out on the iMac 24-inch M3
Screen replacement
A cracked or dark 24-inch display is replaced with a matching panel. Where the picture is there but very dim, we test the backlight and its driver before condemning the panel.
Price confirmed before work starts
Storage
Storage on the iMac 24-inch M3 is soldered and cannot be upgraded. We can help with external storage, clearing space, or moving to a new machine.
Memory
Memory in the iMac 24-inch M3 is part of the Apple silicon chip and cannot be changed after purchase.
macOS reinstall and repair
We reinstall macOS, migrate data, and can revive or restore the firmware in DFU mode from a second Mac when an update has left the machine unresponsive.
We also carry out logic board repair, overheating and fan repair, macOS reinstallation on the iMac 24-inch M3, along with stand repair, no-picture and no-boot diagnosis, port repair, Wi-Fi and Bluetooth card replacement and data transfer to a new PC.
What we see on the bench
- Power comes from an external adapter, which on some configurations also carries the Ethernet port.
- Storage and memory are soldered on the 24-inch Apple silicon iMac, so data recovery depends on the logic board working.
- The display is bonded to the chassis with adhesive and has to be cut free to reach any internal part.
Data recovery from the iMac 24-inch M3
The SSD in the iMac 24-inch M3 is soldered and hardware-encrypted, so there is no drive to remove. If the Mac is dead, data recovery means repairing the logic board far enough to start it and copy the data off. If you have a Time Machine or iCloud backup, tell us, as that may be the quicker route.
Estimate the cost with our data recovery calculator, or read about recovering files after a ransomware attack.
Where the iMac 24-inch M3 sits in the range
Its nearest relatives in the iMac range are the older iMac 24-inch M1 (2021) and the newer iMac 24-inch M4 (2024).
Questions
Can the SSD or memory in the iMac 24-inch M3 be upgraded?
The storage is soldered and cannot be upgraded. Memory is part of the chip and cannot be changed.
My iMac 24-inch M3 will not turn on. Is my data lost?
Not necessarily, but the storage is on the main board, so the board has to be repaired far enough to read it. Do not keep trying to power it on, and tell us about any backups you have.
Where do I find the model number on my Mac?
The model number, an A followed by four digits, is printed in small text on the underside. Apple menu > About This Mac shows the year. For this model, look for A2873 or A2874.
How do I get my iMac 24-inch M3 to you?
Bring it to our workshop at Unit 1 The Willows, 80 Willow Walk, London SE1 5SY, or call 020 7237 6805 to ask about courier collection. We confirm the price before any work starts.

