DuJuana Frazier Thompson Sounds like a good or bad scenario. In the good scenario case: (see steps 27-32) when putting the device back together, the digitizer cable did not make full connection. You need to push the digitizer cable, a bit harder, and more firmly into the connector. In the bad scenario: during the device opening(see steps 1-28), the digitizer or digitizer cable, got damaged, and needs replacing.

I had the same problem on a customer unit. Restoring with iTunes fixed it. Restoring may not work all the time though, so make sure the data is backed up!

you may need to restore your iPad. Sometimes, when you change the digitizer, the LCD does not come on. everything works but you don't see it as screen remains blank. Restoring the device, also resets the parts to factory settings. Just connect to iTunes and reset. Hopefully, you wont have to spend money on a new expensive LCD.