I just did my first digitizer replacement on my iPad mini wifi, and everything went smoothly as far as I could tell. Before I glued it down I tested the screen and everything seemed perfect, so I glued it down, took special care to not pinch the ribbon cable. And when I power it up, the screen works fine for the most part. The problems are:
1) dark black lines covering maybe 1/4 inch at the bottom of the screen.
2) randomly, those black lines start to travel up toward the top of the screen, but if I put pressure on certain spots of the screen, they go back down.
3) in some apps, the lines take over the whole screen and won't go away until I close the app.
All of these problems persist, but the digitizer still seems to work fine in regards to responding to touch. Please help me figure out the problem!