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This step of disassembling the CPU cannot be done under the microscope
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Because when operating under the microscope, the air gun is blown obliquely and heated sideways
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Such a big chip like CPU has too many pads, it will cause uneven heating
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When it is removed, the bottom is very easy to have pad off
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So when we disassemble the CPU, we must put it on the desktop to heat it directly
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Then adjust the temperature of the rotary-air gun to about 320 degrees
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The air volume is level 3-4
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Be sure to blow vertically
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Then blow back and forth several times on the upper and lower sides
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The blowing time on the left and right sides is slightly shorter
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Blow on the upper and lower sides for a longer time
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Because the motherboard it is an L-shaped
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The PCB connected to the upper and lower sides extends out a lot
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It will spread a lot of temperature
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The left and right sides of the PCB extend very little
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Especially the right side
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Basically there is no extended PCB
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The temperature in this area will rise faster
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So when we heat up, we must blow more on the upper and lower sides
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Blow for about half a minute to 1 minute
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Let's take the blade and gently insert it from the edge to see if it can be inserted
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Now the middle area has softened
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The blade can be tucked in
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Then try the upper and lower corners
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When they are loose
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At this time, we will slowly insert the blade inward from the middle
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To remove this chip
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In this way, we have disassembled the CPU
