1

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Well, this seat has been welded

2

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Let's use tweezers to check the pin position of the plastic seat, whether it is fully connected

3

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Especially where the solder points are slightly fuller like this,

4

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be sure to touch them left and right with tweezers

5

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If it doesn't come loose, it's soldered on

6

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This side is closer to the glue

7

00:00:28,433 --> 00:00:31,633

Let's touch it with tweezers, it may loosen

8

00:00:33,466 --> 00:00:35,666

This pin is a little loose

9

00:00:36,900 --> 00:00:38,966

This place is also loose

10

00:00:39,500 --> 00:00:43,466

It may be that the piece of glue on the right has reached the seat

11

00:00:46,266 --> 00:00:48,833

Let's scratch the glue with tweezers

12

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Add some solder paste, solder after reheating,

13

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After melting, we wait for the mainboard to cool down a bit, then clean it

14

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If the plastic seat is not deformed, there is no dirt sticking to the bottom,

15

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and the solder points on the mainboard are relatively full,

16

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this kind of looseness will basically not occur

17

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Let's clean the mainboard now, first brush it with a brush

18

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Then put the dust-free cloth on it, wash it again through the dust-free cloth,

19

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and let the dust-free cloth take away these dirty things

20

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Then we observe the loose point at the magnification

21

00:02:59,566 --> 00:03:03,566

The first corner was loose just now, it is not loose now

22

00:03:04,666 --> 00:03:08,900

When we touch this pin, the glue in the middle does not respond

23

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There is basically no problem now

24

00:03:13,000 --> 00:03:15,500

Mainly observe the solder points

25

00:03:16,933 --> 00:03:23,433

If you see that the reflective intensity of any solder point is not the same as that of the surrounding area,

26

00:03:23,900 --> 00:03:26,466

you should touch it with tweezers

27

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Do not scratch hard to prevent short circuit

28

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Just push this pin lightly

29

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Each pin sticks out a little bit so you can see

30

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Be sure to pay attention when placing the mainboard,

31

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the leftmost pin and the rightmost pin correspond to gold-plated solder points

32

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If you are not careful, it may be misaligned,

33

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because the spacing between the solder points and the solder points is the same

34

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If one is wrong, there will be a wrong row

35

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So we must pay attention to whether the leftmost and rightmost two pins are aligned with the solder points

36

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When we solder, it doesn't matter a little bit to the left or a little bit to the right,

37

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as long as the first leg is not aligned with the second solder point

38

00:04:41,533 --> 00:04:44,233

Do not add too much when adding tin

39

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If the size of the tin addition is uneven, there is too much tin on the solder point,

40

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which may also cause the solder feet to connect together,

41

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just like the small components on the edge just connected together

42

00:04:58,300 --> 00:05:03,700

If there is connected tin, the processing method is the same as the method just now

43

00:05:04,900 --> 00:05:10,700

Take a small piece of tin suction line, and cut the front of the tin suction line a little bit sharper,

44

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because the distance between the solder points is relatively small

45

00:05:17,766 --> 00:05:22,200

Take the scissors at an angle, cut the tin suction line to a slanted point,

46

00:05:22,200 --> 00:05:26,733

and stuff the corner of the tin suction line between the two solder points

47

00:05:27,600 --> 00:05:33,733

If there is a short circuit, just plug it into this position and heat it up, and suck the tin away

48

00:05:37,866 --> 00:05:41,433

Ok, we have already welded the plastic seat