iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Rick Jul 08, 2021

The screen of the iPad Pro 1st Gen won’t respond to touch. Next, let’s check out how we fix the problem.

Turn on the iPad Pro. The screen won’t respond to touch.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Then we disconnect the display. Remove the battery screw on the motherboard. To prevent the circuit from burning out, insert a pry piece to block the battery from the motherboard.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Install a known-good display. The screen still won’t respond to touch. It can be judged that the unresponsive problem is not caused by a damaged display. The motherboard fault has resulted in the problem.

In the first place, we check the touch connectors to see if they are deformed or damaged. It can be seen that the connectors are good.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Then we measure the resistance values of the touch connector. The resistance values of pin 2, pin 4, and pin 6 are found to be too large. According to the diagram, the normal value should be around 144.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Open the circuit diagram. The three pins are connected to the chip through one inductor.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Measure the resistance value of circuit connecting the inductor to the chip. The value is normal.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Then measure the resistance value of another end connecting the inductor to the touch connector. The value is abnormal.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Therefore, it can be judged that the inductor is damaged. A damaged inductor is generally caused by improper operation that involves installing the display while the battery is connected to the motherboard.

So we must disconnect the battery firstly when we install the display. Next, we replace the inductor.

Pry the motherboard slightly to prevent the heat from dissipating fast.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Apply high-temperature tape and insulation mat.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Apply some paste flux. Heat with Hot Air Gun at 360 °C and airflow 2 to remove the inductor.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Apply some middle-temperature solder paste. Keep heating with Hot Air Gun to lower the melting point of the bonding pad.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Remove large pads with solder wick. Get an inductor from an abandoned board. Heat with Hot Air Gun at 330 °C and airflow 2 to solder the inductor. Clean with PCB Cleaner.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

Measure the resistance values of the inductor and touch connector. The values are normal.

Then we install the screen to test. Both the touch and 3D Touch function well. The unresponsive problem of the iPad Pro has been successfully fixed.


iPad Pro Touch Screen Not Working /Unresponsive Screen Problem Repair

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