The touch screen does not work on iPad Mini 2 LTE

The touch screen does not work, I have changed the glass and it has stopped working the following week.

Perform the change of touch glass by a fall. The glass broke. I made the switch and the tablet worked perfectly for one week. But one nigth after loading it ... the tablet stopped working the next morning.

The first option is a reboot ... it did not work. The iPad's touchpad did not work after restart.

I have to add that I replaced a new glass to rule out that it was not crystal failure. I think the error may come from the motherboard.

I took all precautions for repair. I disconnect the battery and all the terminals following the indications of ifixit.

The iPad, It ran for a week perfectly, but stopped working the touchpad. The iPad turns on and can connect to iTunes, but I need the touchpad to unlock it.

Can anybody help me? Anyone have a previous solution?

Thank you so much.