iPhone 6S Receiver no sound when calling -HERE!

The iPhone 6S receiver has no voice when it is in calling, we can't hear the voice from another side, we can hear from each other when we turn on speaker on iPhone. 

According to our repair experience, the iPhone receiver no sound, but the iPhone speaker can hear the voice, this problem is usually caused by iPhone receiver, receiver flex cable, receiver circuit or iPhone audio IC problems.

First we need to test the iPhone 6S. Power on iPhone 6S, go to Settings->Sounds & Haptics to test the ringtone, the ringtone voice tested is normal. Make a phone call to someone else, the receiver has no sound, but the speaker is normal. 

Now, replace the receiver and flex cable, and then test the iPhone 6S, but the failure still exist.


Use digital multimeter to measure the diode data of receiver signal 1 pin and 3 pin that on the connector J3100, the data measured are normal.

Check iPhone schematic diagram via WUXINJI Dongle, we know that the 1 pin and 3 pin of J3100 are through capacitor FL3153 and FL3154 to iPhone audio IC U3500, their diode data are normal, which means the capacitor FL3153 and FL3154 are normal.

After excluding the cause of the peripheral components，we start to check U3500. Take out the iPhone motherboard, we found the U3500 has been replaced before by other repair man,  the several filter capacitors around it has been removed, and there is a power supply IC of NFC also has been removed. 

Now, we need to fix iPhone receiver failure, directly replace the iPhone audio IC U3500. After replacement, connect iPhone 6S to the DC power supply, the trigger current jumps from 0 to 80mA, it's been circulating like this.

The replacement IC has been soldered well, the iPhone CPU didn't been blown by QUICK 861DW hot air rework station. Remove the iPhone audio IC, now the current is back to normal, so we confirmed that it's the problem of the iPhone audio IC. Replace it with new iPhone audio IC, and then install the iPhone.

The iPhone is turning on smoothly, the iPhone receiver is working properly, and the iPhone speaker also works normally.

Tips: If you want to know more about phone repair tools and devices, or if you want to know more free phone repair guides, you can check out www.vipprogrammer.com

Comments

Post a Comment

Popular posts from this blog

2021 Latest MagicAWRT Adapter Restore Tool for Apple Watch

Image
 Here we have the latest MagicAWRT adapter Apple Watch restore tool in 2021, and MagicAWRT offers its complete solutions to fix many apple watch problems. MagicAWRT Adapter is intended for solving service problems with Apple Watch S0/SE/S1/S2/S3/S4/S5/S6 (38 mm / 42 mm / 40 mm / 44 mm). It can solve problems such as white apples, exclamation points, restarts, stuck on screens, poor touch, ID lock, etc. It also can fix related issues that are caused by  Apple Watch glass digitizer touch replacement. Apple Watch Firmware for MagicAWRT Adapter Restore Tool will not be provided, and the customer needs to download themselves. 1. Using MagicAWRT Adapter to reset Apple Watch Data with or without Backup MagicAWRT Recovery Adapter Restore Tool is the best iOS data restore software in the market because of its ease of use and attractive user interface. Most Apple Watch users data losses are due to accidents, failed jailbreaks, hardware and software failures, factory resets, and theft. It would
Read more

My iPhone Got Wet! How To Fix iPhone Water Damage?

Image
 Water damage tends to worsen with time, and it is among the more challenging DIY repairs to undertake, so this guide covers the basic iPhone repair of water damage.  1. Remove iPhone from the water and Turn it off Remove your iPhone from the water as soon as safely possible. Minimize the length of time the iPhone and water are in contact to minimize corrosion. If your phone is still on when removed from the water, attempt to turn it off. If it's off, do not attempt to turn it on. 2. Check External Ports Check any external ports (charging port, headphone jack, SIM card slot, etc.) for corrosion as well. These may have to be cleaned out with alcohol and a  Anti Static Brush , or replaced if cleaning is not practical. Pay special attention to cable ends, battery contacts, connectors, pins, and fuses, as these parts are prone to corrosion and can easily cause the phone to malfunction. Test all the buttons and features (such as the microphone, s
Read more

Free download: Ford / Mazda odometer correction tool software

Image
New Mazda OBD2 Tool is the Digital Odometers, Airbag reset and immobilizer programming cables by OBD2, it is a newly OBD2 device for Mazda Vehicle. Mazda OBD2 Tool is Mazda OBD2 Odometer correct and Airbag module repair tool, especially for Mazda vehicle from 2005-2015.It is OBD2 user friendly tool, used for calibrate odometer and airbag repair. For Mazda Digital Odometers programming and Airbag reseting Tool by OBD2 Mazda OBD Tool is used to calibrate the instrument for all CAN-bus Mazda cars from 2005 to 2015 including MADZA 3/ MADZA 6 / MADZA CX5 / MADZA CX7, as well as reset the airbag/SRS for Mazda with XC236X chip. 2017 New Ford / Mazda OBD2 Tool is the Car Digital Odometers and immobilizer programming cables, and Ford OBD2 Tool and Mazda OBD2 Tool is used to mainly perform Ford / Mazda Digital Odometers, instrument calibration and immobilizer key matching. Here, VIP Pro Shop Team will share the software download link for Ford OBD2 Tool and Mazda OBD2 Tool.
Read more