iPhone7 screen shows abnormal repair

After the iPhone7 is turned on, it enters the system screen and shows that the waves are moving. This machine is Previously repaired. After replacing the integrated Inductor, the screen display is normal.

iPhone7 screen shows abnormal repair

Machine model: iPhone 7
Symptoms: The screen display is abnormal.

Maintenance process:

Received an iPhone 7, fault description. After startup, enter the system screen to show that the waves are moving.

iPhone7 screen shows abnormal repair

iPhone7 screen shows abnormal repair Figure 1.

Dismantling the machine, it was found that the integrated Inductor M2800 had been modified, which was suspected to be caused by insufficient voltage boosting. This integrated Inductor was responsible for boosting backlight, charging, vibration and sound.

iPhone7 screen shows abnormal repair

iPhone7 screen shows abnormal repair Figure 2.

Dismantle the modified integrated Inductor and replace it with a new integrated Inductor M2800. After the boot test, there is no obvious wavy screen.

iPhone7 screen shows abnormal repair

iPhone7 screen shows abnormal repair Figure 3.

iPhone7 screen shows abnormal repair

iPhone7 screen shows abnormal repair Figure 4.