Nokia Lumia 720 Logic Board Replacement Repair Guide

Difficulty

Moderate

Steps

7

Time Required

                          15 - 20 minutes            

Sections

5

• Battery / Back Cover
• 2 steps
• Loudspeaker & Antenna module
• 1 step
• Battery
• 1 step
• Coaxial Antenna Cable
• 1 step
• Logic Board
• 2 steps

Flags

1

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

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Introduction

What you need

Video Overview

Step 1

              BATTERY COVER - PART 1               

• Remove the SIM card tray and the memory card try.
• Use a screwdriver Torx T2 and remove the screw under the SIM card tray.
• Use plastic tools and start the separating the back cover from the top side.

Remove the SIM card tray and the memory card try.

Use a screwdriver Torx T2 and remove the screw under the SIM card tray.

Use plastic tools and start the separating the back cover from the top side.

1024

Step 2

              BATTERY COVER - PART 2               

• Be careful with the volume buttons.

Be careful with the volume buttons.

Step 3

              Loudspeaker & Antenna module               

• Remove the 3x Torx T4 screws.
• Buzzer / Loudspeacker

Remove the 3x Torx T4 screws.

Buzzer / Loudspeacker

Step 4

              BATTERY               

• Disconnect the battery flex cable.
• Unstick the metal foil from the logic board.
• Use a plastic tool with a thin tip and unstuck the battery from the middle frame.
• Battery - BP-4GWA, 2000mAh, 3.7V, 7.4Vh

Disconnect the battery flex cable.

Unstick the metal foil from the logic board.

Use a plastic tool with a thin tip and unstuck the battery from the middle frame.

Battery - BP-4GWA, 2000mAh, 3.7V, 7.4Vh

Step 5

              COAXIAL ANTENNA CABLE               

• Disconnect the Antenna cable from the Logic board and from the Charging Dock board and remove it.

Disconnect the Antenna cable from the Logic board and from the Charging Dock board and remove it.

Step 6

              Logic Board               

• Disconnect the Volume, Power and camera buttons flex cable.
• Remove the 4x Torx T4 screws.
• Slightly lift the board
• Slowly and gently unstuck the light sensor from the middle frame.

Disconnect the Volume, Power and camera buttons flex cable.

Remove the 4x Torx T4 screws.

Slightly lift the board

Slowly and gently unstuck the light sensor from the middle frame.

Step 7

• Disconnect the Display Assembly flex cable.
• Disconnect the Charging Dock Board flex cable.
• Remove the Main board.

Disconnect the Display Assembly flex cable.

Disconnect the Charging Dock Board flex cable.

Remove the Main board.

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

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                    ZFix                     

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