New universal programmer Releases | original universal programmer from china

Friday 16 August, 2019 |

iPhone 8 Doesn't Charge - PCB Repairing Solution

The iPhone 8 doesn't charge, when charge the iPhone 8 by iPhone lighting cable, there is no charging icon in the upper right corner of the iPhone screen. The iPhone 8 charge function is not available, how to fix it? Here is a solution with PCB repairing.

Connect the iPhone 8 to the computer via iPhone lightning cable, the iPhone information can be read on the iTunes, but there is no battery data.

Use screwdriver to remove the screws next the iPhone lightning port, heating the iPhone display screen by PCB screen separator, and then use sucker to open the iPhone screen.

Remove the iPhone 8 display screen, disconnect the iPhone battery, and then take off the iPhone motherboard.

Before are going to measure the resistance value for iPhone battery connector, we can observe the iPhone motherboard by Black Trinocular Microscope.

Observing the iPhone motherboard under the microscope, we found the Q3200 tube next to the iPhone battery connector is missing.

Log in to ZXW online account to check iPhone 8 schematic diagram, we know that one pin of the Q3200 is connected to 2nd Pin of the iPhone battery connector.

Use digital multimeter to measure the 2nd Pin of the iPhone battery connector, the resistance value measured is 0L.

According to the iPhone schematic, for the iPhone 7 and previous models, the battery data is detected by SWI circuit; it's exchanged through the iPhone charging IC and the iPhone CPU. However, from the iPhone 8, the data is detected by I2CO bus.

We need to install Q3200 to the motherboard, attach the iPhone motherboard to the PCB holder fixture, and then apply some solder paste to the iPhone motherboard, use hot air gun to install the Q3200. After installation, use DT-19N digital multimeter to measure 2nd Pin of the iPhone battery connector again, now the data measured is normal.

Assemble the iPhone 8, connect it to the computer, the iPhone 8 can be charged properly, and the battery data can be read normally.

This video was shared by G-Lon.

by Bellin

News for Wednesday 14 August, 2019

Solved: iPhone 6 won't turn on and overheat after water damage

View all news for Wednesday 14 August, 2019 on one page