Hello,
I’m sorry to tell you that it looks like there is no Triode on this board so it can not protect itself from high voltage.
It looks like that your smoothing capacitors are burned, so the voltage of this board become instability. You can try to switch them, but I can not say there are no problems with other components on your board for sure.
Remember to install a DC-DC buck converter between the power source and your board without protection circuit first.
Good luck!