How do you repair a MacBook

Level 1 Repair

Also known asbasic repair. A MacBookconsistsof the followingparts: a screen, a keyboard, a touch pad, a battery, a mechanical or SSD hard drive, a DVD drive, a Wificard,a logic board, and cables connecting other parts to the logic board.The objective is to identify the faulty part(s) fast.

1. We open the bottom panel and conducta visualinspection to determine if it is safe to power up. We never power up aliquid-damagedMacBook without proper treatment since it may result in more chips damageand make the repair work much harder.
2. Connect a special power unit with a digitaldisplay showing the electric current being drawn from the power supply to the MacBook. If an over-current is found we cut off power immediatelyto prevent further damage the MacBook (as this finding is highly likely logic board shorted circuit).
3. Press the power button to see if there areany changes to the current. If there is no change, we remove the keyboardcable and any other cablesfrom the logic board and performa “forced” power-up ofthe logic board. If there is still no change of current, that is evidence that the logic board is faulty and a higher level of repair work is needed.
4. If the logic board can be powered up manually, we re-connect cables one by one to determine which one is preventing the logic board from powering up and then replace the faulty part(s).
5. If the logic board can be powered up, we test all itsexpected functions to see if there are any remaining defects that can be found. Any malfunction will require the next level of repair.
6. Thispart-replacing type of repair is entirelydependenton the availability of the spare parts. If there are no spare parts then there isno fix. All spare parts can be obtained from supply sources except one:Logic board. Find out why: www.it-tech.com.au/why-apple-authorised-service-centre
7. If a faulty logic board is found in your MacBook, Apple Authorized Service Centresand99.9% of the computer stores will tell you that your MacBook is non-repairable. Apple genius bar takes a slightlydifferent approach.If your logic boardis under warranty, it will be sent out to overseas for repair(Foxconn China, manufacturer of logic boards for MacBook, iMac, iPhone). If the board is out of warranty, you either have to buy a new Mac orend up with an “Apple Genius Bar certified dead MacBook”, as there is huge profit difference between selling a new Mac and repairing a logic board.

Level 2 Repair

Let’s make “AppleGenius Bar certified dead MacBook” back to life!

Also known asmanufacturer repair.At this level,we are working on individual logic board components (or chips) such as CPUs, GPUs, ICs, transistors, resistors, and capacitorsand so on. The objective is to identify the faulty chips among the many thousands onthe boardand then replace themwithout damagingthe surrounding chips. We repeatthis process until all faulty chips are found and replaced, and all the functionality and stability tests have beenpassed. In one sense, it is like a meticulous forensicinvestigation. In order to perform the task effectively and economically, one needs the electronic knowledge, detective reasoningskills, micro-soldering skills, experience, proper equipment andmost importantly: an understanding of the”core” designof the Apple logic board. Unfortunately, there are very few companiescan perform thistask effectively – and evenless still in Australia.We are proudto be one of them.

Instead of replacing your entire logic board, we will replace the burned or failed components on your existing logic board with new ones. Your logic board contains thousands of interconnected components. It makes no sense to throw the entire thing away because of just one faulty component!

Logic boards with a physically cracked PCB boardor burn holes are not repairable due to the board 9-layer circuit design interconnecting the surface-mounted components internally. Logic boards with faulty CPUs arealso considered as beingnot economically repairable. These fataltypes ofdamage account for around5% of damaged logic boards.

For more technical info, please visit our website: www.it-tech.com.au

IT-Tech Online MacBook Logic Board Repair Specialist

163A East Boundary Road Bentleigh East, Vic 3165 www.it-tech.com.au (03) 9563 8588