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76.Chip reballing
In the video, we start to reball.
Detail
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Now we start to reball

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Stencil after iPhone 8

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This area of the hard disk is universal

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Any model can be used

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When reballing small chips, after the solder is applied, it should be shoveled towards the front

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This hard drive is too big, so don't shovel it

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If you shovel,half of the solder that will be shoveled out from some of the pads

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So don't shovel it

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After applying, just put the blade at a larger angle.

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Flatten back

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Flatten away the excess

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Don't wipe it either

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It will wipe out a lot

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Then use 230 degrees to reball

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Swing the hot air gun slightly faster

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Because the opening of the hard disk is larger

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And they are all in the middle of the stencil

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When your blowing temperature is too high or the speed is very slow,

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it is easy to blow the stencil to deform and distort it

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Swing the hot air gun quickly

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Do it for about a minute and then blow the solder at a fixed point

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We didn't fix the upper left corner pad because it's grounded

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It doesn't stick and it's normal

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Okay, we've done reballing

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Then take this thing off the side

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In this way, the reballing will be fuller

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And also even

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If it is shoveled or wiped,

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The pads may be uneven in size

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Then at this time, we can see that there is some glue on the corners of the chip that has not been removed

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Take a blade and cut it off to prevent it from touching the surrounding components while we install it

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Now it's clean

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