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163. Android CPU welding- Chip tinning
163. Android CPU welding- Chip tinning
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1

00:00:03,066 --> 00:00:05,500

Next we tin the chip

2

00:00:06,866 --> 00:00:09,933

Before planting tin, let's clean the chip

3

00:00:53,333 --> 00:00:56,633

This is a one-to-one special steel mesh

4

00:00:57,500 --> 00:01:00,300

In fact, you can use the universal net to plant

5

00:01:00,300 --> 00:01:04,433

If there is no special steel mesh, you can only use universal mesh

6

00:01:06,133 --> 00:01:14,133

Android is still better to plant tin, and the spacing of solder joints is larger than that of iPhone series

7

00:01:49,600 --> 00:01:51,133

Wipe off excess

8

00:01:56,600 --> 00:01:58,000

The temperature of the air gun is adjusted to about 230 degrees,

9

00:01:58,000 --> 00:01:59,300

which is the same as that of scraping glue

10

00:02:00,800 --> 00:02:03,933

Preheat it first to prevent the middle of the steel mesh from arching

11

00:03:13,833 --> 00:03:16,033

There are two beads not planted

12

00:03:19,500 --> 00:03:21,666

It should be that the solder joints are a little oxidized,

13

00:03:21,666 --> 00:03:23,366

or the steel mesh is not cleaned

14

00:03:24,000 --> 00:03:25,133

Let's make it up

15

00:03:25,700 --> 00:03:31,100

First take the tweezers and scrape the place where the tin is not planted

16

00:03:32,100 --> 00:03:37,133

It doesn't look like there are dirty things, it should be that the solder joints are a little oxidized

17

00:03:38,966 --> 00:03:41,366

Let's put this tin bead down

18

00:04:33,900 --> 00:04:36,866

The other two are glued together.

19

00:04:37,133 --> 00:04:39,766

The stencil deforms a bit

20

00:05:26,533 --> 00:05:29,233

Reduce the air volume of the air gun

21

00:05:36,733 --> 00:05:42,233

After the lower layer is planted, we will plant the upper cover

22

00:06:58,233 --> 00:07:00,366

Let's warm it up first

23

00:07:37,200 --> 00:07:40,500

Take off the stencil and see if there are any residual tin beads in the hole

24

00:07:40,733 --> 00:07:42,433

If there is no tin bead, it means that it is planted.

25

00:07:43,233 --> 00:07:45,700

We have already soldered this chip

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