iPhone 6s rear Camera cannot be opened for repair

machine model：iPhone 6s

Fault phenomenon: the mobile phone does not display when it is turned on, and the rear Camera cannot be turned on

Maintenance process: take it apart to see that FPC BTB connector is crooked,BTB connector is not handled properly, and corrode is obvious in the rear 2.85V convert transistor.

iPhone 6s rear Camera cannot be opened for repair Figure 1.

Process the display part, remove the display BTB connector, process PAD, and replace with a new BTB connector.

iPhone 6s rear Camera cannot be opened for repair Figure 2.

After replacing BTB connector, the test shows that it is normal.

iPhone 6s rear Camera cannot be opened for repair Figure 3.

Turn on the function of Camera and you can’t view. Take down the 2.85V convert transistor of corrode.

iPhone 6s rear Camera cannot be opened for repair Figure 4.

It was found that PAD was seriously corrode. In order to facilitate the test, the u3200 MOSFET short-circuit was started for testing.

iPhone 6s rear Camera cannot be opened for repair Figure 5.

iPhone 6s rear Camera cannot be opened for repair Figure 6.

The camera function can be opened to view normally, but there will be vertical bars in the dark.

iPhone 6s rear Camera cannot be opened for repair Figure 7.

It is definitely not possible to directly give the 4V of the main VCC to the 2.85V camera VCC. Borrow a photosensitive 3V to the camera VCC on the Capacitor of c3123.