I have a SW 7. Running in Legacy mode. It all of a sudden it stopped taking any commands. I have tried to do a reset but it won’t take. When I turn power on to the track, it starts on it’s own and will idle few 10-15 seconds and then go to full rpm. Only sounds no movement, no horns or bells. Nothing works other than on its own starting it’s self. Where can I start at trouble shooting this? I have checked all the wiring and all seems good. Any advice would be appreciated.