iPhone 6S cannot be powered on for repair

Failure model: iPhone 6S
Malfunction phenomenon:

When using the front Camera shoot mobile phone, it burned as soon as it flashed, and it crashed with a burning smell. Last year, it burned once, and had been in water before.

Maintenance process: according to the customer’s feedback, remove the machine and power up to see the current as shown in the figure:

iPhone 6S cannot be powered on for repair Figure 1.

Connect the power supply large current Road has been disassembled by water according to the customer’s description. After shoot is repaired, the machine is burnt and smells. First disassemble the machine and take a look at the last repaired place as shown in the figure:

iPhone 6S cannot be powered on for repair Figure 2.

The repaired backlight IC damaged Short circuit, and the booster Inductor was damaged and cracked. When the customer shoot saw VCC rising, the rear pole was damaged Short circuit, and the original damaged backlight booster was directly replaced.