HUAWEI P40 Pro charges slowly and consumes power quickly

Machine model: HUAWEI P40 Pro

Fault:HUAWEI P40 Pro charges slowly and consumes power quickly.

Repair process: After I got the phone, I turned it on and plugged in the data cable for charging test, the charging speed was very slow, and when the battery charged to 90%, I unplugged the charging cable and used it for a while, the phone quickly ran out of power again.

HUAWEI P40 Pro is slow to charge and fast to consume Figure 1.

Remove the motherboard from the machine, power on the test, found that the motherboard leakage 0.33A.

HUAWEI P40 Pro is slow to charge and fast to consume Figure 2.

Touch the motherboard with your hand and find some heat near the power supply, so smoke rosin around the power supply and start burning the machine, and find that the rosin above the camera power supply chip melts, indicating that the camera power supply chip is damaged.

HUAWEI P40 Pro is slow to charge and fast to consume Figure 3.

The camera power supply chip removed, to the motherboard connected to the repair power line, measuring the current only 0.0012A, excluding the motherboard leakage fault.

HUAWEI P40 Pro is slow to charge and fast to consume Figure 4.

Replace a new camera power supply chip and solder it to the motherboard.

HUAWEI P40 Pro is slow to charge and fast to consume Figure 5.

The motherboard was put back into the phone and the phone was switched on for another charging test. The phone could be charged normally and after a few hours of testing, the fast power consumption did not occur and the fault was fixed perfectly.