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Xiaomi 10pro mobile phone without charging repair
Machine model: Xiaomi 10Pro
Malfunction: The mobile phone is not charged.
Maintenance process:
I received an Xiaomi 10 Pro, and the fault described a burning smell during charging, and then the phone stopped charging.
Xiaomi 10pro mobile phone without charging repair Figure 1.
Dismantling the machine, it was found that the motherboard had burnt marks, and diode value at USB 5V terminal measured 0.
Open Xinzhizao Soft, find schematic, and check that the burned chip is a 5V conversion chip, which can be short-circuit.
Xiaomi 10pro mobile phone without charging repair Figure 2.
Xiaomi 10pro mobile phone without charging repair Figure 3.
Xiaomi 10pro mobile phone without charging repair Figure 4.
After removing the chip,PCB layer showed signs of burning,diode value remained at zero, and the bone was scraped and healed.PCB layer was scraped and burned, and diode value came back. B3/A2 pin bit of short-circuit Q5400, charging is normal, fault repair.
