1

00:00:03,333 --> 00:00:04,233

Hello,everyone

2

00:00:04,700 --> 00:00:10,233

Today, I will show you the A8 CPU used on the iPhone 6 and iPhone 6 plus

3

00:00:10,900 --> 00:00:12,800

This CPU is really old

4

00:00:13,666 --> 00:00:16,933

When we repair, it may not be repaired any more

5

00:00:17,333 --> 00:00:18,933

But for a maintenance beginner

6

00:00:19,433 --> 00:00:25,166

In the whole process of practicing CPU maintenance, this kind of CPU is still more suitable

7

00:00:26,233 --> 00:00:28,300

Because it is a two-layer CPU

8

00:00:28,633 --> 00:00:35,533

If you can practice this CPU well, it will be relatively simple to repair Android's double-layer CPU in the future

9

00:00:36,166 --> 00:00:40,166

If you could operate well the reballing and glue scrapping these steps

10

00:00:40,566 --> 00:00:48,966

It would be so much conducive to learn something about A13,A14 and even A15 this kind of new CPU in the future

11

00:00:49,233 --> 00:00:54,200

Next, let's take a look at the overall operation process of the A8 CPU

12

00:00:54,766 --> 00:00:57,966

The first step is to remove the CPU shielding cover

13

00:00:58,466 --> 00:00:59,933

Rotary-air hot gun

14

00:01:00,566 --> 00:01:02,233

350 degrees

15

00:01:02,966 --> 00:01:04,466

Maximum air volume

16

00:01:08,166 --> 00:01:11,666

First place the tweezers on one corner of the shield

17

00:01:12,266 --> 00:01:15,033

I'll start with this position in the lower right corner

18

00:01:15,466 --> 00:01:18,366

Place a tweezer tip into the corner of the shield

19

00:01:18,566 --> 00:01:22,100

Another tweezer tip can be placed on the SIM card slot

20

00:01:22,400 --> 00:01:24,500

Twist this tweezers while blowing

21

00:01:24,700 --> 00:01:26,433

Pry from bottom to top

22

00:01:28,433 --> 00:01:31,933

The shield of this CPU is mounted with low melt solder

23

00:01:32,333 --> 00:01:33,933

Prying time may be shorter

24

00:01:35,900 --> 00:01:38,133

You need to pay attention to the whole process

25

00:01:38,500 --> 00:01:40,066

Don't blow for too long

26

00:01:42,733 --> 00:01:45,900

Enter the tweezers from this position in the lower right corner

27

00:01:46,433 --> 00:01:48,933

Only blow the lower side and the right side

28

00:01:49,433 --> 00:01:52,033

After loosening, blow it on top

29

00:01:52,766 --> 00:01:55,200

Flip the entire cover over to the left

30

00:01:56,033 --> 00:01:59,733

Because there are some thermally conductive estersil inside the shield

31

00:02:00,400 --> 00:02:01,833

It cools the CPU

32

00:02:02,533 --> 00:02:05,766

There may be some of its residue on the surface of the CPU

33

00:02:06,133 --> 00:02:11,433

You can clean the surface with a dust-free cloth dipped in a little PCB cleaner to clean

34

00:02:13,266 --> 00:02:17,233

Then take a look at the gap of the inductor to see if there is some residual

35

00:02:19,800 --> 00:02:24,466

If there is, let's take a brush and dip it in the PCB cleaner to clean it

36

00:02:25,166 --> 00:02:28,766

This board is pretty clean so there is no need to clean it