Friday, September 09, 2016

Nokia Lumia 720 – Disassembling procedure – How to replace the Display – Mobiles and smartphones repair and service

Category: Mobiles and Smartphones Repair and Service

Contents of this article 

  • How to remove the case 
  • How to remove the battery 
  • How to replace the display 

Nokia Lumia 720

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.
Be careful with the volume buttons.
Remove the 3x Torx T4 screws.
Buzzer / Loudspeacker
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 Antenna cable from the Logic board and from the Charging Dock board and remove it.
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 Display Assembly flex cable.
Disconnect the Charging Dock Board flex cable.
Remove the Main board.
Use a hair dryer and warm the flex cable.
Careful unstuck the flex cable from the middle frame.
Micro USB connector
Use a tool with a sharp point and carefully unstuck the earpiece.
When you start with the removing the ribbon cable be careful with the buttons and with the mall black cups on it.
Warm the flex cable and detach it.
Now you can start with the reassembling, but before you place the back cover, test the new display assembly.
When you put the lid be careful with the volume buttons.