Ok, please bear with me as I am very new to RC cars/trucks.

I have a Losi SCTE that is running the CC Sidewinder SCT/ 1410 (3800KV) combo. Was running at the track perfectly fine, nothing got hot. Changed the battery, and nothing turned on. So I thought maybe I forgot to charge the fresh battery i put in, so I tried another. Still nothing! I have tried everything I can think of to try to get my ESC to just turn on, and nothing seems to be working. If I plug into my computer using Castle Link, everything links up and the ESC turns on fine. None of the wires are pinched/crimped, batteries are fully charged, just not turning on using the battery.

Could it be that just the switch is bad on the ESC? If so, can I just bypass using a switch altogether and just have the ESC turn on (hopefully) by just plugging in a battery?

Any help would be appreciated.

Truck ran and operated perfectly fine before battery went low and swapped out to fresh battery.