Skip to main content

Fix Your Stuff

Right to Repair

Parts & Tools

Changes to MacBook Pro 15" Logic Board's Power Input Circuit Repai Introduction

Edit by lemmirocketmotor

Edit approved by lemmirocketmotor

Before
After
Unchanged
Device
[ ]MacBook Pro 15" Unibody Mid 2010
Type
[ ]repair
Thing
[ ]Logic Board
Title
[ ]Repairing MacBook Pro 15" Logic Board's power input circuit
Introduction
If you use a power adapter which is to weak for your Mac Book (e.g. 60W for a MBP 15" which is specified for a 80W power adapter) the following should happen from a theoretical point of view: The power adapter is overloaded and heats up until the internal thermal protection switches it off savely. -- And this happened in real live: The adapter blew up in a way, that it delivered one last powerful current pulse which also destroyed parts of the logic board. The Mac Book is still fully operational with battery, but can not be charged nor powered any more, even with a new power adapter. [ … ] The disassembling steps are referenced to [guide|3097|MacBook Pro 15" Unibody Mid 2010 Logic Board Replacement]. For this particular guide it is not necessary to unmount the fans, heatpipes and speaker-microphone-block. Just skip the related steps. [ … ] Since the topology of the circuit between power connector and battery is common technique, this guide might fit to other logic boards too.
Time Required Min
45 minutes
Time Required Max
1 hour
Imageid
Before
After
Difficulty
Very difficult
Conclusion
[ ]To reassemble your device, follow the prerequisited guide in reverse order.
Author
Public
No
Summary
[ ]Some parts between power-connector (MagSafe) and battery can get destroyed by using a wrong power adapter. This guide will show you some basics of the supply circuit, and how to repair it.

Guide Prerequisites

Tools

  • Hot Air Rework Soldering Station x1 added.
  • Desoldering Braid x1 added.
  • Tweezers x1 added.
  • Soldering Iron x1 added.
  • Solder x1 added.

Parts

  • HAT1128R MOSFET x2 original part is obsolete, use an equivalent one e.g.: IRF9317 added.
  • Littelfuse 0469006 SMD fuse 6A x1 added.
  • MacBook Unibody (Model No. A1278) MagSafe DC-In Board x1 added.

Flags

  • Member-Contributed Guide added.

Steps

Step #: 1
Before
After
Step #: 2
Before
After