1

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Then we check the point of the via

2

00:00:05,733 --> 00:00:06,833

How to fix it

3

00:00:07,766 --> 00:00:10,066

We can clearly see the copper posts here

4

00:00:10,333 --> 00:00:15,066

In this position, let's scratch a little to make the copper post a little brighter

5

00:00:16,533 --> 00:00:18,600

To make it easier to stick to solder

6

00:00:21,433 --> 00:00:23,333

This has turned into a pit

7

00:00:23,733 --> 00:00:25,633

We're going to dig a little bit down

8

00:00:27,733 --> 00:00:30,366

Dig to the bottom and you can see that copper foil

9

00:00:32,766 --> 00:00:38,733

When digging this, it is best to find a scrapped motherboard of the same model and dig it first

10

00:00:39,400 --> 00:00:42,400

Take a look at how the lines below are laid out

11

00:00:46,466 --> 00:00:49,633

After digging, let's clean it up a bit

12

00:00:51,733 --> 00:00:55,466

It doesn't matter if you go to clean the finished connecting two lines

13

00:00:55,700 --> 00:00:58,600

The green oil has already made contact with the line

14

00:00:58,766 --> 00:00:59,866

It's already glued

15

00:01:00,466 --> 00:01:01,600

And it won't loosen

16

00:01:02,433 --> 00:01:03,466

After cleaning

17

00:01:03,800 --> 00:01:07,433

We use sharp tweezers to dip a little bit of medium melt solder

18

00:01:07,866 --> 00:01:10,800

Apply to the two copper points that are scraped out

19

00:01:15,600 --> 00:01:17,433

It requires no much solder

20

00:01:17,833 --> 00:01:19,133

This is a bit much

21

00:01:21,166 --> 00:01:23,033

You can get a little out from the edge

22

00:01:25,433 --> 00:01:28,033

Straight air gun 450 degrees

23

00:01:28,200 --> 00:01:29,766

Maximum air volume

24

00:01:30,700 --> 00:01:31,766

Then ccmelt the solder

25

00:01:35,366 --> 00:01:36,300

After melting

26

00:01:36,500 --> 00:01:39,600

Then use tweezers to stick the surrounding solder slag away

27

00:01:41,066 --> 00:01:42,800

Better not to clean it directly

28

00:01:43,633 --> 00:01:47,566

When cleaning, the slag can easily run to the bottom of other chips

29

00:01:47,966 --> 00:01:51,700

Or a short circuit is caused in the gap between the other two components

30

00:01:55,500 --> 00:01:58,933

Now we have completed the adding solder operation of this solder joint