Dead RabbitCore RCM 4300. Which means the link LED on continuously?

Hello friends,

I’m having a little problem here. My prototype based on RCM 4300 is ready for testing, but one of the RCM 4300 I have burned due to an error of mine that threw 12 volts at the entrance of her. The second RCM 4300 stopped responding to any command, and the link LED is lit full time. I also noticed that apparently, the RCM4300 with link led lit, u9 chip is overheating.

Is there anything I can do to save one of my RCM 4300 and my project?

Are you getting any error messages when running samples in Dynamic C?