Huawei nova7 mobile phone WiFi cannot be opened for repair

Huawei nova7 mobile phone WiFi cannot be opened for repair

Machine model: Huawei nova7

Fault phenomenon: the WiFi of the mobile phone cannot be turned on after the machine water damage.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 1.
Fault analysis:
water damage can not only use the corrode WiFi chip and its VCC, but also Huawei’s WiFi Crystal and its circuits.
Maintenance process:
After dismantling the machine, various corrode stains were found inside the rear shell.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure2.

Crystal shielding cover is also surrounded by corrode traces.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 3.

Crystal remove the upper left corner pad break off.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 4.

WiFi chip and its surrounding are clean.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 5.

Replace one Crystal, and make up for pad break off and Jump wire.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 6.

Maintenance results: boot test, perfect repair.

Huawei nova7 mobile phone WiFi cannot be opened for repair Figure 7.