Thanks for the PM bud. Not sure what exactly killed the Rx, but, I think it was a combination of the crash and the new battery. I bought a 910mah LiPo last week and this was its first full flight. I think the crash messed up the 3n1 board which may have spike the current to the Rx. That's really the only thing I can think of. The new ESC works just fine. I plugged the BEC plug into a receiver from one of my cars and it powered up and moved the servo just fine. Would the crystal have anything to do with the power situation? Maybe it destroyed the crystal?