IPhone 11 has no sound (volume key cable corrosion)

IPhone 11, the fault is that the whole board is silent. After receiving the machine, we tested it first, and found that the volume key didn’t respond when pressed, the recording function didn’t work, and there was no response when the setting was turned on to adjust the volume. We first checked the volume key after disassembling the machine, and found that the volume key had moldy traces. How to operate and maintain it? The following is a detailed introduction!

[Fault model] iPhone 11

【 Fault Phenomenon 】 Three No Sounds

[Maintenance process] I received a machine sent by a customer for repair, the model is iPhone 11, and the fault is that the whole board is silent.

figure 1

After receiving the machine, we tested it first, and found that the volume key didn’t respond when pressed, the recording function didn’t work, and there was no response when the setting was turned on to adjust the volume. We first checked the volume key after disassembling the machine, and found that the volume key had moldy traces.

Disconnect the cable of the volume key, then start the machine to test that the sound returns to normal, clean up the corroded place of the volume key seat, and then install the machine for testing. At this time, the volume key can be used normally and the sound test is normal.

IPhone 11 sound three no figure 2

IPhone 11 sound three no figure 3

[Maintenance Result] Install the motherboard into the shell.mobile phoneIt can be turned on normally, and the functions of WiFi, Bluetooth, voice, charging, fingerprint, taking photos and making phone calls are all normal, so the maintenance is over.