nosram won't turn on!

[millsy]

I've been running a nosram pearl v2 in a 10th buggy with no probs until today when I hit a jump and landed on the rear end, I tried to drive away but nothing happend, the speedo was off as was the receiver so I flicked the switch but nothing, I checked all the wiring,soldering, by passed the switch and tried a different battery with no success, pretty lost with what I can do other than sending it away!. Any ideas on what might be the problem?