iPhone 8 Plus Camera does not work for repair

Machine model: iPhone 8 Plus

Fault: Camera doesn’t work, 1x can’t work, 2x can’t work

Maintenance process: after replacing the glass, it is found that the glass of 1 x does not take a picture, and that of 2x is OK. Under the microscope of the main board, it is found that there is a little leakage of copper skin, but there is no trace of the components.The X1 lens BTB connector is j3900 pin. It is found that there is no diode value in 14 pin by measuring diode value, which should be 368 normally.

iPhone 8 Plus Camera does not work for repair Figure 1.

14 pin is connected to r3901, and the copper leakage is near here. It is suspected that Inveracious Soldering is damaged.Look at schematic

The resistance is 0. After measurement, it is found that it is not working. It should be broken.

iPhone 8 Plus Camera does not work for repair Figure 2.

Because the WiFi chip next to it is not resistant to high temperature, so it is not ready to change the resistor, directly deduct short-circuit.

iPhone 8 Plus Camera does not work for repair Figure 3.

Two points Solder Mask and short-circuit were added to the place where the copper sheet was leaked. The installation test was OK and the maintenance was completed.