I have a Novak 10.5 esc with SS4300 motor. I was running on track and ran into another truck. It didn't break anything on either truck, but the brushless 10.5 quit working. I've tried over and over to reprogram and it doesn't work. It flashing blue light sometimes and they say locked rotor dection. The motor spins free, it has not overheated and I don't see any broken wires. What am I missing?

I tried programming again and still don't work. When I get done reprogramming the yellow and red are lit for 5 seconds then it goes to blue and red.

Try double checking your sensor wire, try unplugging it and plug it back in. Might have knocked it loose. Same thing happened to me and it took me a while to find it. If that don't work,you could shoot an e mail to Novak.
cs@teamnovak.com :wave:

I gave that a try then contacted CS@Novak. They said I would have to sent in.