Hello wmidgett85,
There could be multiple issues with this. For one, it could be the screen and battery. I do not know where you got your screen, but you get what you pay for. I would recommend buying a battery and screen from iFixit or Fixez for the highest quality parts. Second, how was it crushed? When you say crushed I believe you mean crushed by a car, meaning it wouldn't be fixable. Was it just a drop? Or how was it crushed? Third, hold the home button and power button for about 10 seconds then let go. It should pull up an Apple logo meaning it just needed restarting. Lastly, if nothing else works, plug it into a computer and see if iTunes recognizes it. If iTunes recognizes it, then it is most likely the screen.
Sadly, I do not know how to use a multimeter when it comes to checking the battery and or logic board to see what is wrong, but I gave you everything else I know above.
Hope this helps!