Here's a question I hope you might answer: I nabbed a reasonably priced new one on Ebay. Seller looks legit, established business. The packaging was precise, tape and all with tag intact and in correct box; the print on face/back of case line up; module matched model; a 6 digit serial number(?) is also along the back; the screws are fine; the Shuriken lights up; BUT...I can't seem to get it to do the 3Button Test. Any insight? Many Thanks