Late 2013 to 2015 15 Inch MacBook Pro A1398 Mosfet Repair

 

If your suffering unreliability issues with your Late 2013 to 2015 MacBook Pro 15 Inch A1398 the chances are it is suffering with a common problem with its CPU Mosfets. 

 A1398 Late 2013 to 2015 Mosfet Repair

 Not exactly a graphics fault but the symptoms can be very similar to the Mid 2012 - Early 2013 issue so we will keep it in this section.

 

The Issue:

After years of use and thermal fatigue the Mosfets which accurately supply the correct voltage to the processor start to deteriorate.

Over many cycles and years bond wires crack and lift off occurs inside the Mosfet. Die attach degregation also occurs which changes the internal resistance of the mosfet. Every time a Mosfet is turned on its gate is stressed wearing away oxide and a process called gate oxide breakdown occurs. Over time the thickness of the 'gate' is reduced preventing the Mosfet from working as efficiently as it should be.

The issues with the Mosfets present themselves mainly when you are doing very basic tasks and the MacBook is under minimum load such as web browsing. The CPU tries to save power and lowers itself into another power state but the power rail becomes unstable and the power to the CPU is shut down resulting in the machine turning off.

We get lots of these who have been to Apple and have had powerful tests run on them for days no problem and come back with a clean bill of health - thats not when this fault occurs.

 A1398 Mosfets

Symptoms:

  • Sudden Black Screen Shut Downs.

  • Possible Kernel Panics

  • Random Restarts

  • Possible graphical glitches if you have an IRIS model with GPU inside the CPU.

Models Affected:

Apple MacBook Pro 15-Inch "Core i7" 2.3 Late 2013 (DG) Retina - ME294LL/A - MacBookPro11,3 - A1398 - 2745

Apple MacBook Pro 15-Inch "Core i7" 2.0 Late 2013 (IG) Retina - ME293LL/A - MacBookPro11,2 - A1398 - 2674

Apple MacBook Pro 15-Inch "Core i7" 2.6 Late 2013 (DG) Retina - ME874LL/A - MacBookPro11,3 - A1398 - 2745

Apple MacBook Pro 15-Inch "Core i7" 2.6 Late 2013 (IG) Retina  - BTO/CTO - MacBookPro11,2 - A1398 - 2674

Apple MacBook Pro 15-Inch "Core i7" 2.3 Late 2013 (IG) Retina - BTO/CTO - MacBookPro11,2 - A1398 - 2674

Apple MacBook Pro 15-Inch "Core i7" 2.5 Mid-2014 (DG) Retina - MGXC2LL/A - MacBookPro11,3 - A1398 - 2881

Apple MacBook Pro 15-Inch "Core i7" 2.5 Mid-2014 (IG) Retina - BTO/CTO - MacBookPro11,2 - A1398 - 2876

Apple MacBook Pro 15-Inch "Core i7" 2.2 Mid-2014 (IG) Retina - MGXA2LL/A - MacBookPro11,2 - A1398 - 2876

Apple MacBook Pro 15-Inch "Core i7" 2.8 Mid-2014 (DG) Retina - MGXG2LL/A - MacBookPro11,3 - A1398 - 2881

Apple MacBook Pro 15-Inch "Core i7" 2.8 Mid-2014 (IG) Retina - BTO/CTO - MacBookPro11,2 - A1398 - 2876

Apple MacBook Pro 15-Inch "Core i7" 2.2 Mid-2015 (IG) Retina - MJLQ2LL/A - MacBookPro11,4 - A1398 - 2909

Apple MacBook Pro 15-Inch "Core i7" 2.5 Mid-2015 (IG) Retina - BTO/CTO - MacBookPro11,4 - A1398 - 2909

Apple MacBook Pro 15-Inch "Core i7" 2.5 Mid-2015 (DG) Retina - MJLT2LL/A - MacBookPro11,5 - A1398 - 2910

Apple MacBook Pro 15-Inch "Core i7" 2.8 Mid-2015 (IG) Retina - BTO/CTO - MacBookPro11,4 - A1398 - 2909

Apple MacBook Pro 15-Inch "Core i7" 2.8 Mid-2015 (DG) Retina - MJLU2LL/A* - MacBookPro11,5 - A1398 - 2910

 

Our Fix:

We remove the logic board, remove the 3 x failing Mosfets and fit 3 x Brand New FDMF6708 Mosfets.

The logic board is then ultrasonically cleaned to remove dirt and flux and it is then dried in a PCB Oven

Once repaired we stress test the MacBook for at least 1 hour and then leave it on running doing basic tasks for 24 Hours.

 

How much does it cost?

This is a 2013 -2015 Component Level Repair and so we charge £229.00 inc VAT

 

Timescale:

We tend to do these in batches every 2 weeks. If you drop it off a day before the next batch is worked on for example we should have it ready to collect in 2 -3 days once it has been tested fully. Our online repair portal will keep you updated with pics and diagnostic information throughout the repair process.

If you want to go ahead please try our online booking system , email sales@uksl-ltd.com or call us.

 

Warranty:

We offer a 6 Month Warranty with our logic board repairs covering the Issue that we have fixed.