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There is no sound on the handset when Huawei mate40 PRO makes a call
Machine model: Huawei mate40 Pro
Fault phenomenon:earpiece has no sound when calling
Maintenance process:
The earpiece has no sound when the machine is broken and the screen is changed.After the machine test, other functions are normal, external music is intermittent,earpiece is silent,microphone is normal.After dismantling the machine, it was found that the main board was slightly deformed, but it was placed outside. When pressing earpiece, there was a break. After opening the Xinzhizao Soft drawing, it was found that the earpiece amplification IC was below, and the shielding cover was decisively disassembled, and it was found that Inductor had fallen off.After replacement, everything is normal. At this point, when Huawei mate40 Pro calls,earpiece has no sound fault repair.
There is no sound on the handset when Huawei mate40 PRO makes a call Figure 1.
There is no sound on the handset when Huawei mate40 PRO makes a call Figure 2.
