I've read a number of the topic's regarding Spark Controller's not working.. mine actually doesn't see any lights or do anything when attempting to turn it on. It was working fine and then I charged it, or so I thought. I went to do a flight and no lights come on. I tried charging at the location and nothing happens at all. The connecting plug seems to be loose. Could it be a bad connection? Is there a fix for that?
Thanks...

Hi, thank you for reaching out and we do apologize for the inconvenience. Can you please verify if you will notice some lights when charging the RC? Also, can you please provide us a short video showing the problem for us to help you further. Thank you for your continued support!

Can it be, the last time "then I charged, or so I thought", you reversed the plug and broke the connector?
I am sorry, but in case the socket or parts of it are loose, I think you need to send it in.