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Casio fx-82MS Button Replacement

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  1. Casio fx-82MS Button Replacement, Button: paso 1, imagen 1 de 2 Casio fx-82MS Button Replacement, Button: paso 1, imagen 2 de 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.

  2. Casio fx-82MS Button Replacement: paso 2, imagen 1 de 1
    • Flip over the calculator.

    • Locate the 6 screws on the backside.

    • Remove all six screws.

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

  4. Casio fx-82MS Button Replacement: paso 4, imagen 1 de 2 Casio fx-82MS Button Replacement: paso 4, imagen 2 de 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.

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

    • Flip the board sideways as shown in the picture.

  6. Casio fx-82MS Button Replacement: paso 6, imagen 1 de 2 Casio fx-82MS Button Replacement: paso 6, imagen 2 de 2
    • Remove the rubber mat.

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

  7. Casio fx-82MS Button Replacement: paso 7, imagen 1 de 2 Casio fx-82MS Button Replacement: paso 7, imagen 2 de 2
    • Replace the broken button.

  8. Casio fx-82MS Button Replacement: paso 8, imagen 1 de 2 Casio fx-82MS Button Replacement: paso 8, imagen 2 de 2
    • Put the rubber mat back in its place.

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

  9. Casio fx-82MS Button Replacement: paso 9, imagen 1 de 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.

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

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

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