During the training of bga soldering, one of our students brought with him a client iPad 2017, which won’t not turn on.
First, we performed the initial diagnosis of the device.
For this, iPad was connected to a laptop in order to exclude that the tablet is in recovery mode (DFU).
The tablet was not detected by the laptop.
It was decided to disassemble the tablet and sequentially disconnect the touchscreen and display from the case for further diagnosis.
A separator was used to prevent damage to the sensor.
When disassembling, pay attention to the lower right part of the touchscreen, there are ribbon cables of the sensor, Home button and display.
Set the temperature to not more than 70 degrees Celsius on the separator.