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Next, let's clean up the mainboard and chips

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Before cleaning, let's drag some tin over the solder joints

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Otherwise, after cleaning, it is very easy to oxidize

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In this way, it is not easy to pull off when cleaning.

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If there is a little tin on some solder points, when cleaning,

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the lint-free cloth may pull the solder points off

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We also drag some tin on the chip

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Part of the solder points on the chip may be oxidized, so it may not be easy to tin

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If it is not easy to tin, do not drag it forcibly, otherwise it may drag and leak copper

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And then, don't flatten too long

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Flattening for too long is easy to burn the chip

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It's almost done

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Let's wipe these dirty things first and then clean them

14

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Next we start to clean the mainboard and chips

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Well, the mainboard and chip are basically cleaned up