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Casio fx-82MS Button Replacement

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    1. Casio fx-82MS Button Replacement, Button: step 1, image 1 of 2 Casio fx-82MS Button Replacement, Button: step 1, image 2 of 2
      • This is the calculator in question.

      • The tools you will need are: a Phillips screwdriver, a spudger and a soldering iron.

      • If you don't have access to a solding iron, you need a stanley knife instead.

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    2. Casio fx-82MS Button Replacement: step 2, image 1 of 1
      • Flip over the calculator.

      • Locate the 6 screws on the backside.

      • Remove all six screws.

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    3. Casio fx-82MS Button Replacement: step 3, image 1 of 1
      • Once all six screws have been removed, take the back part off of the calculator.

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    4. Casio fx-82MS Button Replacement: step 4, image 1 of 2 Casio fx-82MS Button Replacement: step 4, image 2 of 2
      • Locate the rubber contact points.

      • Solder the rubber contact points, while using the spudger to pry the PCB loose.

      • PCB stands for Printed Circuit Board.

      • Toxic gasses might be created. Hence, do this in a well ventilated room.

      • Start with the lower plugs (left on the photo). Gently pry the PCB loose at the same time.

      • For this step a third person is required for safety. One person uses the solder iron, the other one uses the spudger to pry the PCB loose.

      • If you don't have accessibility to a solder iron, use a utility knife to remove the plugs.

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    5. Casio fx-82MS Button Replacement: step 5, image 1 of 1
      • After having soldered away all six plugs, lift up the PCB.

      • Flip the board sideways as shown in the picture.

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    6. Casio fx-82MS Button Replacement: step 6, image 1 of 2 Casio fx-82MS Button Replacement: step 6, image 2 of 2
      • Remove the rubber mat.

      • Do this carefully, to make sure the buttons stay in their place.

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    7. Casio fx-82MS Button Replacement: step 7, image 1 of 2 Casio fx-82MS Button Replacement: step 7, image 2 of 2
      • Replace the broken button.

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    8. Casio fx-82MS Button Replacement: step 8, image 1 of 2 Casio fx-82MS Button Replacement: step 8, image 2 of 2
      • Put the rubber mat back in its place.

      • Make sure you push the six slightly damaged plugs through the rubber mat.

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    9. Casio fx-82MS Button Replacement: step 9, image 1 of 1
      • Push the PCB back into place.

      • Again make sure you push the slightly damaged plugs through the PCB, to make everything fits perfectly again.

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    10. Casio fx-82MS Button Replacement: step 10, image 1 of 1
      • Place the back side of the casing back on top of the front.

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    11. Casio fx-82MS Button Replacement: step 11, image 1 of 1
      • Put all six screws back in the back side of the casing.

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