Logic Board 4.0GHz Quad Core 4GB i7
Apple Part Number: 661-03173
1-Year Warranty
Full replacement
Fast Shipping
1-2 business days
Tested & Verified
QA before ship
Expert Help
Install guidance
Compatibility
| Model | Order # | Model # | EMC | Identifier | Processor |
|---|---|---|---|---|---|
| iMac (Retina 5K, 27-inch, Late 2015) | MK462LL/A | A1419 | 2834 | iMac17,1 | 3.2 GHz Intel Core i5 |
| iMac (Retina 5K, 27-inch, Mid 2015) | MF885LL/A | A1419 | 2806 | iMac15,1 | 3.3 GHz Intel Core i5 |
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About this part
The Logic Board 4.0GHz Quad Core 4GB i7 (Apple part number 661-03173) is a genuine Apple part that fits the iMac (Retina 5K, 27-inch, Late 2015) and iMac (Retina 5K, 27-inch, Mid 2015). The logic board carries the processor, memory, power management and every connector, so it decides whether the Mac powers on at all.
Before you order, match the model identifier on your Mac (Apple menu, About This Mac, System Report) to one of the identifiers listed for this part: iMac17,1 and iMac15,1.
Signs the logic board needs replacing
- No power, no chime, or a black screen even though the charger light is on
- Random shutdowns, restart loops, or kernel panics that survive a clean macOS install
- Liquid damage, corrosion, or a burnt smell near the board
- Ports, Wi-Fi, or USB-C charging that stop working all at once
Not sure the logic board is the real cause? Our logic board repair service starts with a full diagnosis, and we can install this genuine Apple part for you through our iMac repair service, in our Tampa shop or by mail-in repair from anywhere in the US.
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