Repair of Huawei Glory X30i mobile phone without service failure after water inflow

Repair of Huawei Glory X30i mobile phone without service failure after water inflow.

Check the small board and find that there is corrosion next to the microphone. Remove the chip, clean the pad and redo the filter next to it. Boot test, perfect repair.

Machine model: Glory X30i

Fault phenomenon: there is no service after the machine enters the water, and the search for operators fails.

Huawei Glory X30i mobile phone has no service failure maintenance after water inflow Figure 1

Huawei Glory X30i mobile phone has no service failure after water inflow. Figure 2

Fault analysis: no service caused by water inflow. We first find the fault point along the corrosion.

Maintenance process:

Remove the motherboard and find it very clean.

Huawei Glory X30i mobile phone has no service failure after water inflow. Figure 3

Huawei Glory X30i mobile phone has no service failure maintenance after water inflow Figure 4

The failure of starting the small board without tail plug was still the same, so the shield was disassembled for inspection, and no corrosion traces were found, and the power supply of the amplifier was also very clean.

Huawei Glory X30i mobile phone has no service failure maintenance after water inflow Figure 5

Huawei Glory X30i mobile phone has no service failure after water inflow. Figure 6

This model is MTK chipset, so it may be the same as Samsung mobile phone, and the small board filter cannot be less. Considering that the motherboard is very clean, check the small board again.