
If your iMac Unibody (2009–2011) needs graphics (GPU) repair, our London technicians can help, usually with a quote on the same day you bring it in.
The graphics card on these iMacs is on a removable MXM module on many models, which makes repair or replacement possible. The 2011 27-inch with the Radeon HD 6970M has the most failures. Symptoms include lines, a dark screen at start-up and crashes. We test, then repair or replace the module.
About this model: The 2009–2011 unibody iMacs (A1311 21.5-inch and A1312 27-inch) have the magnetically held glass, which makes getting inside easier than later glued models. They have four RAM slots behind a door and a 3.5-inch hard drive.
Signs it needs graphics (GPU) repair
- Vertical lines
- Black screen after chime
- Artifacts
- Kernel panics
How we do it
On this Mac the graphics hardware sits on a separate card or module, so we test it in isolation, repair or replace it, and clean the cooling path so the new card doesn’t overheat.
Before anything is done, we explain the cost against the value of your machine, and if a repair doesn’t make sense, we’ll still help you get your data off.
At a glance
| Years | 2009–2011 |
|---|---|
| Processor | Intel Core 2 Duo, then Core i3/i5/i7 |
| Storage | Standard SATA drive |
| Memory | Socketed, upgradeable |
| Power / charging | Internal mains power supply |
Before you bring it in
If it only fails when warm, mention it: heat-related graphics faults behave differently from a completely dead chip.
Which model do you have?
This page covers the iMac 21.5 & 27-inch Unibody (2009–2011) (iMac10,1 / 11,x / 12,x; A1311, A1312). 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
Is a Mac this age worth repairing?
It depends what you use it for. For recovering data, running legacy software or keeping a working studio setup, often yes. We give you the cost upfront and an honest view on whether it makes sense.
How much does it cost?
See the price section above. We always quote before starting, and if we can’t fix it, you don’t pay for the 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.

