When I plug the Dell adapter into the Venue 11 Pro tablet, the light on the adapter immediately turns off, and the tablet won't charge. I'm assuming something is causing the charger to trip and turn off? I tried removing the battery from the tablet, to see if the battery was the problem, but the adapter still turns off as soon as it's plugged into the tablet. Currently, I'm trying to trickle charge the tablet with another tablet's power adapter (5V 2A) while the tablet is off. Any ideas what could be wrong? I have a warranty; I just want to make sure it's not some simple oversight or easy fix before sending it in.

Thanks