1

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Next, we fix the mainboard and the chip

2

00:00:10,500 --> 00:00:15,166

Fix each pad with green oil first to prevent the copper wire from loosening

3

00:00:19,300 --> 00:00:24,300

Also pay attention to see if the copper wire is connected to other places because of tin

4

00:00:27,100 --> 00:00:31,366

For example, if the position of the copper wire rests on the capacitor,

5

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it may cause a short circuit

6

00:00:48,000 --> 00:00:52,433

When wiping green oil, the position of the pad does not need to be wiped,

7

00:00:52,866 --> 00:00:55,333

but the edge of the pad is need to be wiped,

8

00:00:55,333 --> 00:00:57,633

to make the copper wire glued to the mainboard

9

00:01:16,166 --> 00:01:19,533

This position is not easy to stick, we don't stick it

10

00:01:19,866 --> 00:01:21,700

Then glue each point on the chip

11

00:01:25,400 --> 00:01:27,066

The chip is a little dirty,

12

00:01:27,433 --> 00:01:30,200

we use cotton to clean the soldering oil on it

13

00:02:15,000 --> 00:02:20,333

We just used 4 pads of I2C, one is ground, one is 1.8V,

14

00:02:20,333 --> 00:02:24,933

and two more pads, one is clock line and one is signal data line

15

00:02:33,466 --> 00:02:38,033

Even if the other positions are stained with the green oil, it will have no effect

16

00:02:47,700 --> 00:02:51,800

After the green oil is applied, we will cure it with a curing light

17

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Cure it a little longer to make sure it is fully set

18

00:03:32,033 --> 00:03:33,866

Ok, the green oil is dry,

19

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then we find a small section of double-sided tape to fix this chip to the side of the mainboard

20

00:03:42,700 --> 00:03:45,300

Because when the mainboard is installed in the case,

21

00:03:45,300 --> 00:03:48,033

there is a certain gap between it and the battery,

22

00:03:48,133 --> 00:03:51,166

so we can fix this chip to the side of the mainboard

23

00:03:55,733 --> 00:03:58,100

This mainboard is a thick double-layer mainboard

24

00:03:59,600 --> 00:04:02,400

It is basically the same thickness as this chip

25

00:04:14,633 --> 00:04:17,300

The tweezer broke a wire during operation

26

00:04:20,000 --> 00:04:23,300

Let's leave it alone, I'll pick it up later

27

00:05:09,466 --> 00:05:11,633

We smooth these lines a little,

28

00:05:13,600 --> 00:05:17,000

and it's best to get them to stick to the double-sided tape,

29

00:05:17,766 --> 00:05:19,933

so that it would be more secure

30

00:05:46,533 --> 00:05:50,000

Use a tweezer to press the chip slightly against the mainboard

31

00:05:54,500 --> 00:05:58,400

That's it, it's fixed, put it in the case

32

00:06:00,500 --> 00:06:02,433

Pay attention to this position

33

00:06:02,900 --> 00:06:04,866

If the battery is a little squeezed,

34

00:06:05,066 --> 00:06:09,066

you can insert the back of the tweezer into the gap between the mainboard and the battery,

35

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and push the battery a little

36

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Never poke the battery with the tip of the tweezer, otherwise it will burst