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Introduction

The screen of your Garmin Drivesmart 55 EX may become cracked, unresponsive, or present a distorted image over time with frequent use. The touch screen for the Garmin device displays the GPS information. When this screen malfunctions or becomes cracked, the device is essentially unusable.

Replacing the screen requires a disconnection from the motherboard through a simple locking tab mechanism. This guide will provide the step-by-step process for replacing the Garmin Drivesmart 55 EX screen. Replacing a damaged screen restores full function and reliability to the device.

Before you begin, make sure the device is powered off and unplugged from the charger.

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1. Étape 1 Screen
  Use a T5 Torx screwdriver to remove the four 4.2 mm black screws from the back case.
  
  Insert the plastic opening tool into the gap between the screen and case, and release the clips along the edges of the device.
  
  Use opening picks along the perimeter to keep them separated until you can remove the screen.
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2. Étape 2
  Gently separate the screen from the case and place the device flat on the surface.
  
  Avoid pulling on the screen too forcefully, as the display ribbon cable is still connected to the motherboard.
  
  Use a T5 Torx screwdriver to remove the four 3.8 mm silver screws from the motherboard.
  
  Avoid scratching the motherboard when using the screwdriver, as this can damage the device.
  
  Gently pry the motherboard up using the plastic opening tool.
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4. Étape 3
  Use your fingers or tweezers to disconnect the battery connector on the underside of the motherboard.
  
  Avoid pulling on the cables.
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5. Étape 4
  Use a spudger or a clean fingernail to flip up the locking flap on the ZIF connector.
  
  Use the widest tool possible to avoid damaging the delicate hinge pins.
  
  Use tweezers to gently pull the gold ribbon cable from the socket on the motherboard.
  
  Be careful when removing the ribbon cable because it is thin and can tear easily.
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6. Étape 5
  Insert a spudger or plastic opening tool into the gap between the screen and display frame.
  
  Once a corner begins to lift, slowly slide the tool around the edges to release the clips securing them.
  
  The screen is glass and if you use too much force it can shatter and crack the screen.
  
  Separate the screen from the device.
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