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The Casio fx-82MS is a commonly used simple calculator in many schools. It has a very long lifetime. But sometimes a button stops working, which can be very annoying. In this guide we will guide you through the steps to fix this problem.
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This is the calculator in question.
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The tools you will need are: a Phillips screwdriver, a spudger and a soldering iron.
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Flip over the calculator.
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Locate the 6 screws on the backside.
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Remove all six screws.
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Once all six screws have been removed, take the back part off of the calculator.
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Locate the rubber contact points.
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Solder the rubber contact points, while using the spudger to pry the PCB loose.
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Start with the lower plugs (left on the photo). Gently pry the PCB loose at the same time.
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If you don't have accessibility to a solder iron, use a utility knife to remove the plugs.
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After having soldered away all six plugs, lift up the PCB.
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Put the rubber mat back in its place.
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Make sure you push the six slightly damaged plugs through the rubber mat.
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Place the back side of the casing back on top of the front.
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Put all six screws back in the back side of the casing.
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Delft University of Technology, Team 1-6, Flipsen Fall 2016 crwdns2935289:0Delft University of Technology, Team 1-6, Flipsen Fall 2016crwdne2935289:0
TUD-FLIPSEN-F16S1G6
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