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iPhone XR phone is not charged for repair
Machine model: iPhone XR
Malfunction: the phone does not charge.
Maintenance process:
An iPhoneXR failure machine, the original failure was the boot screen flashing, and no booting was left unused for one month.
Disassemble the machine, brush the motherboard BTB connector with Cleaning solvent, and it can be turned on. The screen doesn’t flash, but it doesn’t charge.charging connector FPC is replaced, and the failure remains the same.
iPhone XR phone is not charged for repair Figure 1.
Measuring that the pp_vbus1_e75 of U3300 has 5V and the battery holder has no VCC, it is preliminarily judged that the charging IC U3300 is broken.
iPhone XR phone is not charged for repair Figure 2.
iPhone XR phone is not charged for repair Figure 3.
iPhone XR phone is not charged for repair Figure 4.
SMD REWORK STATION quickly remove the chip and replace it with a new charging chip.
iPhone XR phone is not charged for repair Figure 5.
Cooling installation test, charging is normal, troubleshooting, and maintenance is over.
iPhone XR phone is not charged for repair Figure 6.
