Introduction

This guide will show you how to disassemble the Garmin Nuvi 1390LMT GPS to replace the logic board.

Snap the plastic cover off using a plastic opening tool.
  • Snap the plastic cover off using a plastic opening tool.

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Remove the four black 11 mm T5 torx screws. Remove the four black 11 mm T5 torx screws.
  • Remove the four black 11 mm T5 torx screws.

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Pop the screen cover off with a plastic opening tool.
  • Pop the screen cover off with a plastic opening tool.

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Gently pull the wire ribbon connecting the screen to the logic board from the plug.
  • Gently pull the wire ribbon connecting the screen to the logic board from the plug.

  • Be careful when unplugging the wire ribbon. It is very fragile.

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Remove the two silver 5 mm T5 torx screws connecting the circuit board to the plastic casing.
  • Remove the two silver 5 mm T5 torx screws connecting the circuit board to the plastic casing.

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Flip the logic board over.
  • Flip the logic board over.

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Disconnect the harness between the battery and the logic board. Disconnect the harness between the battery and the logic board.
  • Disconnect the harness between the battery and the logic board.

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Conclusion

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

Trey Ulsh

Member since: 10/22/2015

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3 Guides authored

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Montana Tech, Team 10-4, Shirk Fall 2015 Member of Montana Tech, Team 10-4, Shirk Fall 2015

MTUM-SHIRK-F15S10G4

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