Casio Fx 50Fh Ii Scientific Calculator Battery Replacement Repair Guide

Difficulty

Easy

Steps

Time Required

                          5 - 10 minutes

Sections

Battery
9 steps

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Introduction

What you need

Step 1

              Battery

To turn the calculator off, first press the “shift” button.
Release the “shift” button, then press the “AC” button.

To turn the calculator off, first press the “shift” button.

Release the “shift” button, then press the “AC” button.

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Step 2

Place the calculator face down, then use a Phillips #00 screwdriver to remove the single screw securing the battery hatch in the top right corner.

Place the calculator face down, then use a Phillips #00 screwdriver to remove the single screw securing the battery hatch in the top right corner.

Step 3

Push the battery hatch to the right until it slides off.

Push the battery hatch to the right until it slides off.

Step 4

Put on a pair of protective gloves before handling the battery to eliminate the risk of chemical burns.
Insert the tip of a spudger into the indent on the right-hand side of the battery to lift the edge of the battery up.
Lift the battery up and out.

Put on a pair of protective gloves before handling the battery to eliminate the risk of chemical burns.

Insert the tip of a spudger into the indent on the right-hand side of the battery to lift the edge of the battery up.

Lift the battery up and out.

Step 5

Inspect the battery compartment any alkaline residue.
If no residue is present, skip to Step 7.

Inspect the battery compartment any alkaline residue.

If no residue is present, skip to Step 7.

Step 6

Use a cotton swab dabbed with white vinegar to wipe the alkaline off the battery compartment.
Use a dry cotton swab to remove the vinegar and alkaline residues.
Let the battery compartment dry completely.

Use a cotton swab dabbed with white vinegar to wipe the alkaline off the battery compartment.

Use a dry cotton swab to remove the vinegar and alkaline residues.

Let the battery compartment dry completely.

Step 7

Insert a new LR44 1.5V alkaline button battery into the compartment, with the positive sign facing up.

Insert a new LR44 1.5V alkaline button battery into the compartment, with the positive sign facing up.

Step 8

Reattach the battery hatch by sliding the hatch in from the right to the left.

Reattach the battery hatch by sliding the hatch in from the right to the left.

Step 9

Use a Phillips #00 to secure the screw.

Use a Phillips #00 to secure the screw.

You have successfully replaced the battery of a CASIO fx-50FH II Scientific Calculator!

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                                                                                      One other person completed this guide.

Author

                                      with 1 other contributor

                    Cheuk Wai Chan

Member since: 07/05/2022

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Team

                       York University, Team M-4, Allen Summer 2022                        

                                                  Member of York University, Team M-4, Allen Summer 2022 



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                                            1 Guide authored

Frank Loi - Aug 9, 2022

Very nice guide! I found the pictures to be very good and corresponding to the steps very well.

Nancy Yeo - Dec 7, 2022

Thank you for the steps. I followed the steps and managed to salvage my calculator which I almost had to throw away. This has helped reduce waste. :)

Introduction#

What you need#

Team#

Introduction

What you need

Team