I had the same problem when installing a new digitizer (black) with home button preinstalled.
The home button was working outside the ipad, but not working when fully installed. Deinstalled the digitizer and put kapton tape on the home button flex cable.
I had the same problem when installing a new digitizer (black) with home button preinstalled.
The home button was working outside the ipad, but not working when fully installed. Deinstalled the digitizer and put kapton tape on the home button flex cable.
After that everything was working fine.
See picture below where I put the kapton tape.
[url=http://postimg.org/image/vlgpl6ufb/][img]http://s23.postimg.org/vlgpl6ufb/Clipboard01.jpg[/img][/url]