Redmi Note8 Pro mobile phone consumes power quickly, and its battery is not durable for repair

Redmi Note8 Pro mobile phone consumes a lot of power and its battery is not durable. After the NFC chip is removed, the motherboard no longer leaks electricity, so the chip is replaced and the fault is repaired.

Machine model: Redmi Note8 Pro

Malfunction: Mobile phone consumes power quickly.

Maintenance process:

Received a note8 PRO from Redmi. The fault description shows that the mobile phone consumes a lot of power and the battery is not durable.

Get the mobile phone boot test, all functions are normal, and the power leakage on the motherboard is 50mA.

The leakage of the motherboard is generally caused by the grounding capacitance around the chip or the short circuit of components. You only need to find the short circuit components and replant or replace them.

Power on the motherboard and check the chips or components with high motherboard temperature. After searching, it is determined that the temperature of the motherboard is abnormal. Open Xinzhizao, check the annotation map of Redmi note8Pro, and find the location of the heating chip.

Redmi Note8 Pro mobile phone consumes power quickly, and its battery is not durable. Maintenance Figure 1

Confirm that this is an NFC chip, open the point bitmap and schematic diagram, measure the peripheral components, and find no component short circuit.