That sucks and sometimes things just happen. I had a Mamba Max ESC just quit on me in the middle of a run for no reason. it wasn't hot or jolted in any way that may have damaged it during that run. I decided to get a new losi Xcelorin system to replace it. It worked then i hooked it up to the computer to change the settings and when i hit the send button the thing craped out. It would power on but it wouldn't arm or register any input from the receiver. I sent it in to Horizon because it wasn't even a week old and they are replacing it. They didn't take very long to check it out determine it had an internal problem but the ESC was back ordered so i'm still waiting. I hope that you can get it figured out since your warranty is probably up and the process of sending it in is very time consuming. My plan was to spend all summer at the track to practice and try to reach the next level with my driving ability. Summer started 4 weeks ago and i haven't been to the track in 6 weeks.