Vivint 2 gig panel touchscreen not reponding

I purchased a 2 gig panel vivint branded off e-bay when I plugged it it it worked ie the touchscreen responded , I was able to access programming with 2203 . I then disconnected , mind you there was no battery connected. I now power up everything is fine except the touchscreen no longer responds??? Is there a remedy to this issue? If possible

Thank You

Touchscreen is dead?

Try powering down, then powerup again (connect battery before powering up)

I haven’t run across that before but you could try updating the firmware since that doesn’t require using the touch screen. In all likelihood though you have a hardware problem and need a new panel.