Double check tape covers all exposed copper points on the digitizer. That will (99.9%) fix freaking out digis. As for lock/ power , its on a flex of its own. True it may be tied to other functions, but you may want to inspect closer. My bet is a nicked power flex, and misplaced tape. As for those that order a new batch of glass and it works, betcha some came with tape ;). Just my two cents....hope its worth a dollar later :)