I have 2 Flipsky FSESCs like the one seen in this picture. Yesterday, one of them was disconnected during a ride, and after re-connecting it to power, it won't power on. No LED lights, nothing. I probed the 5V rail and I'm getting 5.1V, but when I probe the 3.3V rails, I'm getting 0V. This leads me to believe that the DRV8302 chip is working as it should be. The VREG (579-TC2117-3.3VDBTR) on the back of the PCB is heating up.
I assume that once I replace the VREG, it should power right up and things will work as expected. But, in the case that it doesn't, I'm wondering if I should be keeping an eye out for any other components that could be causing the issue. Any help or insight is greatly appreciated.