iPhone 6S volume up button unavailable - Easy Guide

The iPhone 6S volume up button is not available. This failure is common. Do you know how to fix this problem quickly? If you don't have a better solution, you can follow the following article and step by step to fix the issue that your iPhone 6S Volume Up button is not available. Check the following article to get your iPhone to work again.

We received an iPhone 6S, the fault described is that the iPhone 6S volume up button unavailable. We need to repair it.

Put iPhone 6S on the WL Aluminum Alloy Pad, and then use phone opening tools to disassemble the iPhone, take out the iPhone motherboard.

Measure the resistance of J4700_3# with Fluke 15B+ Digital Multimeter, it is normal. Put iPhone motherboard under the 3.5X-90X Stereo Zoom Microscope to check, we found the iPhone power IC was replaced by other phone repair man. Measure its voltage, it only has 0.5V, and the voltage of BUTTON_VOL_UP_CONN_L volume up button signal is pulled down. 

Picture 16-11-1

Based on our repair experience, mostly this failure is caused by damaged iPhone CPU, so replace the iPhone power IC is useless. 

BUTTON_VOL_UP_L lower voltage, it has no external pull resistance, it is pulled directly through the CPU internal. Borrow PP3V0_TRISTARUSB controller 3V string the resistance of 1K, so that the voltage is pulled up to 1.6V. 

Assemble the iPhone to test; now the iPhone volume up button can be used normally.

16-11-2

Tips: Need any professional cell phone repair skills or phone repair  tools, please contact VIP Pro Shop Team for help!

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