Default [Hardware] Digitizer not working after LCD+Digi assembly replacement

I installed a new LCD+Digi assembly into an HTC Inspire 4G. The LCD powers on but the digi does not respond to touch. I even disassembled the phone a 2nd time and checked all the cables and connectors for contact/damage. I haven't ruled out the possibility that the hardware is bad, but I'm wondering if there are perhaps some nuances I could be missing. This is not my first time working on mobile phones. Thanks.