Introduction

This guide shows the step by step process of how to disassemble a TI-89 calculator in order to replace the power button. This guide may also be followed in order to replace any of the other buttons on the calculator. This process requires few tools and should only take thirty minutes. Please be careful during the disassembly to not damage the internals of the calculator.

Remove the six T6 screws from the back of the calculator.
  • Remove the six T6 screws from the back of the calculator.

Add Comment

Remove the battery cover.
  • Remove the battery cover.

Add Comment

  • Unscrew the Phillips screw on the internal battery cover.

Add Comment

  • Using a Flathead screwdriver carefully pop the back of the calculator off.

Add Comment

  • Remove the back of the calculator.

Add Comment

  • Remove the six Phillips head screws from the circuit board.

Add Comment

  • Remove the circuit board and the attached display screen. Make sure not to damage the circuit board.

Add Comment

  • Peel back the rubber grommet sheet.

  • Make sure that the buttons remain attached the the rubber grommet as you remove it.

Add Comment

  • Remove and replace the On button.

Add Comment

Conclusion

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

One other person completed this guide.

Dan Stahl

Member since: 10/01/2017

101 Reputation

1 Guide authored

Team

0 Comments

Add Comment

View Statistics:

Past 24 Hours: 1

Past 7 Days: 10

Past 30 Days: 45

All Time: 258