tl;dr : when setting up usb connection for first time, I noticed LCD display suddenly no longer recognized touch. I was able to flash the LCD calibration image and the panel detected touch then, but when I returned to main menu, touch no longer work. Please help!!
For those who need more info, here’s a more detailed explanation:
Everything was working fine until I tried to set up USB connection to print from my computer using Repetier Host. I ran into some problems and never was able to figure it out, but somewhere in the process, the touchscreen stopped responding to touch. I’m not sure if it has anything to do with Repetier Host but its just when I noticed.
I have tried several things. Disconnect and connect the ribbon cable from the LCD screen and the motherboard. Reflashed the most recent version of the firmware, and made sure both motherboard and LCD screen share the same version.
The calibration start up sequence of tapping on the top right of the screen does not work either. I have flashed the calibration image into a microSD card and was able to enter the calibration sequence that way, and touch did work then, so I know the screen is not completely broken. But as soon as I return to the main screen, touch is no longer working.
If someone has any idea of things I could try, please let me know. I am beginner and have tried everything that was suggested online. I would greatly appreciate some help. Thanks!