iPhone 6 Plus displays white screen and reboots automatically after the logo appears

Trouble Phenomenon

In fact, the owner of the IPhone 6plus has been complaining about including those boot white, and then reboot after the logo appears. This makes many iphone users feel annoyed.as such customer describes that iPhone displayed normally, but it was a little curved. After straightening it with hand, iPhone displays white screen and reboots automatically. It reports error when rooted. Repair Process

First enter system to test and iPhone will reboot after showing Apple logo.

According to repairing experience, the problem of white screen is very likely to be caused by CPU, chip and EEPROM. In addition, the customer has straightened the iPhone. We can conclude the empty solder or welding joints drop on CPU may cause the problem. Therefore, reweld the CPU.

Remove the CPU, we find a circuit towards chip disconnects, as shown in picture 2-10.

Besides, the other circuit is not stable either, so place a enameled jump wire to the relevant pin of chip.

How to wire the CPU solder pad is shown in picture 2-11.

After wiring well, weld the wire to the pin of chip under microscope, as shown in picture 2-12.

After finishing the above steps, reweld CPU, as shown in picture 2-13.

Then the root goes on smoothly. Enter system and activate interface. Trouble is removed.