Alright that makes absolutely no sense to me whatsoever....I tried the crystal trick. Nothing. I even swapped out the receiver board as I had one from a tank I am using for parts. Still nothing. I ran out to the garage, grabbed all three radio controllers and crystal sets that I have to start some crystal swapping. What ends up working is the TX 7.145 crystal in the remote and the RX 27.145 crystal in the tank. Am I super stupid, or are those numers NOT THE SAME??? If someone could explain that one, that would be awesome. But bottom line- this bad boys operational again!!!