Today the hotend of the #printrbot #play crashed into the bed (while unpacking I accidentally unplugged the z level sensor).
After that the extruder stepper refused to work. 
What I tried by now: I switched the connectors from z and e. Then the extruder stepper seemed to work, but the z not.
It looks like a printrboard problem. Btw by controlling the printer via #cura, I got very strange charakters in the console log.
Any hints what I can check next. Replace the board?