27″ iMac A1419 Late 2015 Model 4.0GHz i7-6700K Logic Board R9 M395 2GB 661-03174
The 27″ iMac A1419 Late 2015 Model 4.0GHz i7-6700K Logic Board R9 M395 2GB 661-03174 is a replacement logic board designed for the 27-inch iMac with a 4.0GHz Intel i7 processor and the AMD Radeon R9 M395 2GB graphics card. It controls your iMac’s core functions, including processing, graphics, power management, and peripheral connections. Replacing the logic board is necessary if your iMac experiences critical malfunctions or failures in these areas.
Related Part Numbers
- Apple Part Number : 661-03174
- Printed Part Number : 820-00134-A
Compatibility
- iMac 27″ A1419
- iMac17,1 Retina 5K Late 2015: MK462LL/A (3.2 GHz Core i5)
- iMac17,1 Retina 5K Late 2015: MK482LL/A (3.3 GHz Core i5)
- iMac17,1 Retina 5K Late 2015: BTO/CTO (4.0 GHz Core i7)
Condition
- Open Box
- Replacement Part Fully Tested
- Passed All Quality Inspections
- High-Quality Replacement Part
Compatibility Agreement
Why Replace the 27″ iMac A1419 Late 2015 Model 4.0GHz i7-6700K Logic Board R9 M395 2GB 661-03174
- Complete System Failure: If your iMac doesn’t power on or remains stuck on the startup screen, even after troubleshooting steps, the logic board might be faulty. The board is responsible for powering the system and initiating the boot process, so a failure here means the device is unusable.
- Frequent Crashes or Freezing: If your iMac crashes or freezes unexpectedly during regular use, it may be caused by a defective logic board. The logic board controls the communication between various components, and if it’s damaged, your system will likely experience instability.
- Graphics Problems (Screen Artifacts, Flickering, or Black Screens): If you’re seeing display issues like graphical glitches, flickering, or black screens, the issue could lie with the R9 M395 2GB GPU integrated into the logic board. A replacement would restore proper graphics rendering and display functionality.
- Power or Overheating Issues: If your iMac experiences random shutdowns, fails to charge properly, or is overheating, it could be a sign of malfunctioning power management on the logic board. Replacing the logic board would restore proper thermal and power regulation.
- Peripheral and Connectivity Failures: When external devices, such as USB or Thunderbolt connections, stop working or are intermittently disconnected, it may be a problem with the logic board’s communication systems. A replacement will restore full peripheral functionality.
Signs That Replacement is Needed for 27″ iMac A1419 Late 2015 Model 4.0GHz i7-6700K Logic Board R9 M395 2GB 661-03174
- No Power or Boot-Up: If your iMac won’t turn on or stays stuck on the startup screen, this could point to a failure in the logic board, which is responsible for powering on the device and initiating the boot process.
- Frequent Crashes, Freezing, or System Errors: If your iMac crashes, freezes, or displays persistent system errors, even after updating software or performing system resets, the issue could be a malfunctioning logic board that needs replacement.
- Display Artifacts, Flickering, or Black Screen: If you notice screen flickering, graphical glitches, or an entirely black screen, these could be caused by a faulty GPU integrated into the logic board. A new logic board will restore proper display performance.
- Overheating or Unexpected Shutdowns: If your iMac gets unreasonably hot, shuts down on its own, or runs slower than usual, the logic board’s power and thermal management functions may be compromised, necessitating a replacement.
- Failure of USB or Other Peripheral Ports: If you’re experiencing issues with USB, Thunderbolt, or other ports, such as devices not connecting properly, the logic board may be failing to communicate with external devices, and replacing it will fix these connection issues.
- Unresponsive Keyboard, Mouse, or Input Devices: If your keyboard or mouse are intermittently unresponsive or stop working completely, and troubleshooting doesn’t resolve it, the problem could lie in the logic board, which manages communication with input devices.
Important Notes
- Professional Repairs: It’s recommended to have this repair done by a qualified technician, especially if you don’t have experience with Consumer Electronics/gadget disassembly.
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⚠️ Warning: You Must Backup Your Data Before Repair Process ⚠️
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