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HUAWEI P40 Pro speakers have no sound.
Machine model: HUAWEI P40 Pro
Malfunction: HUAWEI P40 Pro speaker has no sound.
Maintenance process: After getting the mobile phone, turn it on and play music for testing. But even if the volume is turned to the maximum, the speaker of the mobile phone still has no sound, so the machine is disassembled for maintenance.
HUAWEI P40 Pro speakers have no sound Figure 1.
Remove the horn, and test the horn with 2V voltage. There is a noise, indicating that the horn is normal. Then, the value of the tail plug-in board was evaluated, and it was found that the tail plug-in board was broken. So I found the same small tail-inserted board from another place and put it on.
HUAWEI P40 Pro speaker has no sound Figure 2.
After the machine was installed, it was tested again. The mobile phone played music and the bell sounded, and the fault was perfectly repaired.
HUAWEI P40 Pro speaker has no sound Figure 3.
