Try re-centering your trims. Make sure you click throttle trim "all the way down." My blades wouldn't spin up after a crash and it took me a few days to figure it out. My blades wouldn't spin up because some how the throttle trim got pushed up. I'm still trying to figure out what the heck happened. I was thinking maybe some sort of safety cut out on a crash. Good luck.

BTW, this is with the stock TX

Mike.