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HUAWEI Mate 30 has no sound after connecting Bluetooth

HUAWEI Mate 30 has no sound after connecting Bluetooth. After making up the phone, the WiFi chip is replaced, and the fault is fixed.

HUAWEI Mate 30 has no sound after connecting Bluetooth

Machine model: HUAWEI Mate 30

Malfunction: HUAWEI Mate 30 is connected to Bluetooth, but there is no sound when making phone calls.

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HUAWEI Mate 30 has no sound after connecting Bluetooth Figure 1.

Maintenance process: disassemble the motherboard and find that the WiFi chip has been repaired at home, but it has not been repaired. Remove the WiFi chip and type the value line diode value. No problem was found, but a dot dropped.

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HUAWEI Mate 30 has no sound after connecting Bluetooth Figure 2.

Make up the lost PAD, and use Solder Mask to handle UV curable and insulation.

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HUAWEI Mate 30 has no sound after connecting Bluetooth Figure 3.

Replace a new WiFi chip, boot into the system and retest, and the fault is perfectly repaired.

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HUAWEI Mate 30 has no sound after connecting Bluetooth Figure 4.

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HUAWEI Mate 30 has no sound after connecting Bluetooth Figure 5.

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