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Introduction

This guide will require a new calculator, as well as some soldering. If you're not sure how to solder, see iFixit's soldering guide.

  1. If the screw is not turning, do not force it. This can strip the screw.  See the How to Remove a Stripped Screw guide if the screw is already stripped. Using the #00 screwdriver, unscrew the six, 6mm Phillips screws.
    • If the screw is not turning, do not force it. This can strip the screw. See the How to Remove a Stripped Screw guide if the screw is already stripped.

    • Using the #00 screwdriver, unscrew the six, 6mm Phillips screws.

    • Use the spudger to pry into the space between the blue back cover and the white body to take off the back cover.

  2. Using the #00 Phillips screwdriver unscrew the two, 3mm Phillips screws located near the top of the calculator.
    • Using the #00 Phillips screwdriver unscrew the two, 3mm Phillips screws located near the top of the calculator.

    • Lift the metal plate from the battery and set it to the side.

  3. Use the spudger to lift the battery up from the black holder.
    • Use the spudger to lift the battery up from the black holder.

  4. The Essential Toolkit

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    The Essential Toolkit

    The most helpful tools in our most compact kit.

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    • Put the new CR2032 battery in. Never insert a different type of battery!

    • Reverse the steps 2 and 1.

  5. Using the Phillips #00 screwdriver, carefully remove the two 3mm screws holding the screen in place.
    • Using the Phillips #00 screwdriver, carefully remove the two 3mm screws holding the screen in place.

  6. Be sure to pull the ribbon cable, so that it only disconnects from the larger green board.
    • Be sure to pull the ribbon cable, so that it only disconnects from the larger green board.

    • Gently lift the screen up from the front of the calculator, carefully disconnecting the ribbon cable from the larger green board.

  7. Once the screen has been removed, it should still have all connecting wires and the ribbon cable attached to it.
    • Once the screen has been removed, it should still have all connecting wires and the ribbon cable attached to it.

    • After the screen is replaced, you will have to re-solder the ribbon cable to the motherboard.

Conclusion

To reassemble your device, follow these instructions in reverse order.

3 other people completed this guide.

Taylor Lamb

Member since: 10/01/2015

231 Reputation

1 Guide authored

Team

Cal Poly, Team 11-2, Forte Fall 2015 Member of Cal Poly, Team 11-2, Forte Fall 2015

CPSU-FORTE-F15S11G2

4 Members

4 Guides authored

3 Comments

Where can you find a replacement screen for this calculator?

TJ

johns632 - Reply

Really the only way to find a replacement screen is by just buying some broken ones(but with a good screen) off of Ebay

kubagurPL -

dows soldering the ribbon cable back actually work?

kubagurPL - Reply

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