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iPhone X front camera and rear camera not working? What you should start with?

Panoramica Video

  1. Press the power button to turn on the phone. The display is normal. Tap ‘Camera’ icon and enter into camera mode. The front camera and the rear camera can not be activated. The flashlight also can not be activated.
    • Press the power button to turn on the phone. The display is normal. Tap ‘Camera’ icon and enter into camera mode. The front camera and the rear camera can not be activated. The flashlight also can not be activated.

    • Therefore, we need to focus on the rear camera circuit

  2. Attach the motherboard to the PCB Holder. For better inspection, tear off sponge around connectors first.
    • Attach the motherboard to the PCB Holder. For better inspection, tear off sponge around connectors first.

    • Check the motherboard under the microscope. One component next to the power flex cable has fallen off the board.

    • Our guess is that due to improper operation, the component was pried off when the power flex cable was disconnected by the unknown repairman.

    • We can see that its bonding pad has also been pried off the board.

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  4. Open Refox. The missing component is inductor FL3903, which is the protective inductor on the 1V1 power supply line of the rear camera.
    • Open Refox. The missing component is inductor FL3903, which is the protective inductor on the 1V1 power supply line of the rear camera.

    • Since the bonding pad has also fallen off the board, we need to connect Pin 1 of FL3903 with Pin 1 of C3928 by jumping wire.

  5. Remove black adhesive around FL3903 and C3928 with tweezers. Clean with PCB Cleaner afterwards. For better operation when jumping wire, apply some solder paste to the bonding pad with Soldering Iron at 360℃. Then apply some Paste Flux.
    • Remove black adhesive around FL3903 and C3928 with tweezers. Clean with PCB Cleaner afterwards.

    • For better operation when jumping wire, apply some solder paste to the bonding pad with Soldering Iron at 360℃. Then apply some Paste Flux.

    • Prepare a length of Enameled Copper Wire of 0.02mm in diameter. Jump a wire between the two pins with Soldering Iron. Once done, cut off the excess wire with Sculpture Knife. Clean with PCB Cleaner afterwards.

    • Apply some UV Curable Solder Mask to the wire for insulation protection. Then solidify the board under UV Dryer Lamp for 5 minutes.

  6. Now we can assemble the phone and test.
    • Now we can assemble the phone and test.

    • Tap ‘Camera’ icon and enter into camera mode. The front camera and the rear camera work normally.

Phryne

Membro da: 17/11/2019

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