Disassembly/Repair of the mobile device Nokia 7.2 TA-1196 with each step description and the required set of tools.
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Step 1.
β Before disassembling, do not forget to turn your phone off.
Step 2.
Use the Key tool (aka Needle) or Paperclip. Push the tip all the way into the hole until the tray ejects, and then pull the tray of SIM and Memory card (Micro SD) out.
β Pay attention! The tool must be inserted into a hole on the edge of the phone's housing. Do not press too hard. It may break the tray eject mechanism.
Step 3.
We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.
βΉοΈ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.
Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.
Do not use a lever or any force for separation that could damage the elements inside.
Step 4.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew two screws and remove the bracket holding the connectors.
Step 5.
Pry up the fingerprint sensor connector and remove the cover.
Step 6.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew the eight screws.
Step 7.
Remove the cover with an NFC tag and antennas that protect the printed circuit board (PCB). Try to lift the covers by the edges and not push anything between them to not accidentally touch or short-circuit anything on the PCB.
βΉοΈ On the upper cover, you can see the metalized coating on the plastic in the form of tracks and contact pads. These are Wi-Fi, Bluetooth, and GPS antennas.
Step 8.
Disconnect the battery connector as soon as possible.
βΉοΈ The Nokia 7.2 TA-1196 model has a battery LC-620 with 3400 mAh capacity (aka rechargeable battery).
β It is highly recommended to disconnect the connector to avoid possible short circuits during disassembly.
Also, try not to use a metal tool to disconnect the rechargeable battery connector or do it carefully.
Step 9.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew the eight screws.
Step 10.
Remove the cover hiding the connectors.
Step 11.
Disconnect two coaxial cables connectors, cable to the mainboard, on the daughterboard.
β Do not pull on the cable or pry it with a sharp tool, the connectors are pretty weak and break easily, or the cable falls out of the end (lug).
Step 12.
Remove the loudspeaker assembly with sub-board and antennas.
Step 13.
Using a screwdriver (Philips 1.5 mm PH000), unscrew one screw and remove the sub-board. The board contains a charging port (Micro USB), microphone, spring contacts for the speaker, vibration motor, and an antenna unit.
Step 14.
Pry up the connectors of the display module cable, inter-board cable, and two coaxial cables.
β Be careful when removing the cables from the connectors, the cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.
Step 15.
Pry up the connectors and remove three rear cameras and one front (selfie) camera.
Step 16.
Carefully remove the printed circuit board. There is no need to use a lever or try to reach the board by force. Make sure that nothing is getting in the way or holding the board.
β Do not bend the circuit board when removing it or push tools under it. Unbeknownst to yourself, you can damage components or cables from the inside.
Step 17.
βΉοΈ In the display frame remained: the earpiece speaker, battery, and vibration motor.
If you have a question, ask us, and we will try to answer in as much detail as possible. If this article was helpful for you, please rate it.
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