CPUA central processing unit
Shell split
If you look at the CPU that has been taken out, there are parts of large metal on the substrate. You have no idea how many times I think the CPU and whether so big. This is a component for dissipating heat generated by the CPU of the heat spreader.
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| Decomposition before | Disconnect the rubber blade of the cutter | OK if put up here |
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| Heating with a heat gun | Shell percentage success | The removal of the excess solder |
Destruction
Just heat gun, so I did not get completely solder, and I tried to polish it with water-resistant paper. I do not mean in particular, but I became shiny mirror like.
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| Polish | Cut with a saw | Further cut |
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| Core crushing(;_;) |
Results photo
The first picture is what polished to clean the CPU which is cut with a saw. Cross-sectional picture is I was not the purpose, but it happens to be
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| Cross section | The junction of the core and the substrate | Electronic circuit |