Introduction

Solve some failed button problems. Corrosion forms inside some of the buttons.

Image 1/1: Refer to other guide for more pictures.
  • Power down. Any method works.

  • Refer to other guide for more pictures.

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Image 1/3: Use dollar store 1mm flathead jeweler screwdriver for clutch screws. Image 2/3: Use dollar store 1mm flathead jeweler screwdriver for clutch screws. Image 3/3: Use dollar store 1mm flathead jeweler screwdriver for clutch screws.
  • Remove clutch screws, torx bottom screws, and battery drawer screws.

    • Use dollar store 1mm flathead jeweler screwdriver for clutch screws.

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Image 1/2: Image 2/2:
  • Disconnect power and two clutch screws.

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Image 1/2: Refer to other guide for more pictures Image 2/2: Refer to other guide for more pictures
  • Remove front panel.

  • Refer to other guide for more pictures

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Image 1/2: Image 2/2:
  • Remove board screws.

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Image 1/1:
  • Spacers will fall out. Didnt catch where they go.

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Image 1/1:
  • Pull top board and screen off. There is not much chance for damage, the connector is easily removed.

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Image 1/3: Buttons will fall out. There may be a mess of them that pile out. Image 2/3: Take mouse flex cable off, otherwise it will dangle. Flip up tab Image 3/3: Take mouse flex cable off, otherwise it will dangle. Flip up tab
  • Take keyboard off. Be careful. Buttons will fall out, refer to another calculator or front page picture.

  • Buttons will fall out. There may be a mess of them that pile out.

  • Take mouse flex cable off, otherwise it will dangle. Flip up tab

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Image 1/3: Clean with rubbing alcohol. Image 2/3: Be careful not to dig into board with knife. this would render board useless. Image 3/3: Be careful not to dig into board with knife. this would render board useless.
  • Cut around failing button, peel off delicately with a screwdriver or tweezers.

  • Clean with rubbing alcohol.

  • Be careful not to dig into board with knife. this would render board useless.

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Image 1/3: Rubbing alcohol may be used. Image 2/3: Rubbing alcohol may be used. Image 3/3: Rubbing alcohol may be used.
  • Clean screen with compressed air. Makes cleanup simple.

  • Rubbing alcohol may be used.

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Image 1/2: POWER ON AND VERIFY FIX. Image 2/2: Set screws in place.
  • Press connector back in. Shift board around with finger until docks match.

  • POWER ON AND VERIFY FIX.

  • Set screws in place.

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Image 1/1: Reassemble.
  • Drop more screws in, and tighten all.

  • Reassemble.

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Conclusion

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

4 other people completed this guide.

trogfield

Member since: 11/01/2014

229 Reputation

3 Guides authored

One Comment

How does this fix the buttons, I do't want to damage my calculator

Daniel Doutch - Reply

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