REPAIR TUTORIAL MacBook SMC Circuit and PPBUS_G3H By Learnallfix November 2, 2021 0 System Management Controller (SMC) is a programmable chip containing Apple computer management codes. We will use the MacBook Air 13” 2015-2017 logic board schematics 820-00165 as references.Every Apple computer model… Read more
REPAIR TUTORIAL Laptop Voltage Requirement and Power Supply diagram (VALW section of ADP+,+3V,+5V) By Learnallfix November 2, 2021 2 Laptop Power Supply and Voltage Requirement (VALW section of ADP+,+3V,+5V) .Bios is a firmware that runs the Southbridge whose main function is to run the LPC Bus interface.The storage capacity… Read more
REPAIR TUTORIAL How to fix macbook question mark folder By Learnallfix November 1, 2021 0 What is Mac question mark folder?When you switch on a Mac, instead of displaying the Apple logo, your Mac screen shows a mac flashing folder question mark in the centre.… Read more
REPAIR TUTORIAL MacBook Power On Sequences: PPBUS_GH3 voltage By Learnallfix October 30, 2021 0 1. PP3V42_G3H power rail creation.The always-on 3.42V power rail PP3V42_G3H can be created directly from an internal battery or Magsafe charger.The MacBook Battery power goes through R7006, D7005 to U7090… Read more
REPAIR TUTORIAL MacBook logic board power rails and all system powergood By Learnallfix October 30, 2021 0 Apple logic board S3 power rails creation 1. The U0500 CPU/PCH outputs PM_SLP_S5_L control signal to inform the SMC (System Management Controller) that the MacBook power state transition will begin.2. … Read more
REPAIR TUTORIAL How to fix MacBook battery not charging issue By Learnallfix October 25, 2021 0 1. What is MacBook battery not charging issue?A MacBook battery not charging problem means that you can turn on your MacBook, but the charger will not charge the battery. In… Read more
REPAIR TUTORIAL MacBook Pro Graphics Issues and their causes By Learnallfix October 25, 2021 0 The GPU is the Graphics Processing Unit. It is responsible for video output on the screen. If it is faulty, you will see all sorts of the abnormal video display… Read more
REPAIR TUTORIAL How to fix spilled water on a MacBook Air or MacBook Pro By Learnallfix October 25, 2021 0 You spilled water on a MacBook Air/Pro and it turned off almost instantly. What to do now? Follow the instructions of this guide to minimize the liquid damage and increase… Read more
REPAIR TUTORIAL How to fix iMac not powering on By Learnallfix October 13, 2021 0 When you press the power button, your iMac won’t turn on. Your iMac has a black screen. What to do now? Don’t worry! We’ll run through various checks, tips and… Read more
REPAIR TUTORIAL How Southbridge and Northbridge works on motherboard By Learnallfix October 11, 2021 0 The Southbridge is an integrated circuit on the motherboard that is responsible for the hard drive controller, I/O controller and integrated hardware such as sound card, video card if present… Read more