I just got my sn-3 today and when I tried to turn on the digital illumination it came on for a few seconds, flicked and then turned off. I can't get it to turn back on now at all. I tested the battery with a voltmeter and it registered 3.3v so I don't think the battery is the problem. Any thoughts? I really don't want to have to send the scope back considering I just waited 6 months for it