New universal programmer Releases | original universal programmer from china

Thursday 26 December, 2019 |

Troubleshoot: iPhone 6S Plus Speaker Doesn't Work

Here is an iPhone 6S Plus with speaker failure, when turn on the speaker on the iPhone 6S Plus, it's no sound, the iPhone 6S Plus speaker doesn't work. When plug the earpiece to the iPhone, it works normally, and the vibration and phone answering are normal, only the iPhone speaker is not working, we need to fix it.

Plug the earpiece to the iPhone 6SP, it works normally, which means the working condition of the iPhone big audio is good, so possible it's the problem of the iPhone big audio IC and iPhone audio amplifier IC or I2S2 problem.

Use qianli 3D screwdriver to remove the screws at the bottom of the iPhone screen, put the iPhone 6SP on the screen separator, and then use screen sucker to remove the iPhone screen. Disconnect the iPhone battery; take out the iPhone 6SP motherboard.

In order to confirm if the problem was caused by external accessories, we installed the motherboard on another iPhone back case. Then turn on the iPhone 6SP to test it, but the problem is still the same, now we confirmed that it's not the problem of the iPhone external accessories.

Next we need to check iPhone big audio IC. Attach the iPhone motherboard on the PCB holder fixture, and then use DES H92 rework station and tweezers to remove the iPhone big audio IC. Observe the solder pad, it looks good.

Apply some solder paste to the solder pad, and then use phone rework station to weld a new iPhone big audio IC to the motherboard. Now turn on the iPhone 6SP and test it, but the failure is still the same.

Remove the iPhone audio amplifier IC, and then use digital multimeter to measure the corresponding Pins, we found the I2S2 clock signal 45_AP_TO_CODEC_XSP_I2S2_BCLK is disconnected.

Log in to the ZXW online account to check iPhone 6S Plus circuit diagram, this pin only connected to iPhone big audio IC, iPhone audio amplifier IC and iPhone CPU.

Remove the iPhone big audio IC, and then use digital multimeter to measure the corresponding Pins, the resistance value is normal.

Use soldering iron to solder a jump wire under the iPhone big audio IC to the iPhone audio amplifier IC corresponding Pins, and then install the iPhone audio amplifier IC.

Assemble the iPhone 6S Plus, turn it on, and then test it, now the iPhone 6S Plus speaker is working normally.

by Bellin

News for Wednesday 25 December, 2019

Here: iPhone 7 No Service with hardware solution

View all news for Wednesday 25 December, 2019 on one page