i bought my SF3 from a forum member a while back, tried it out to scan a few codes and it worked fine. sent it off to SCT and got it back in about 2 weeks with them unlocking it for me. just bought my tunes from AM, get them loaded up, toss my CAI on the car and plug up the SCT for that magic moment. THE SCREEN WILL NOT LIGHT UP!! tried it on my Vic and same song and dance. wont turn on. itll work like a champ when hooked into the computer. BAMA says the cord is bad, but i cant see how SCT managed to screw that up when unlocking the tuner... any ideas?