2020-09-06, 10:01 PM
The cause seems to be a PSU which supplied too high of a voltage. It may have been only for a brief period, but too long for the TVS diode which only protects static electricity. It is best to only use a battery to power the motor controller.
I have replaced the controller and refunded return shipping as well. I am able to repair the controllers damaged by replacing the tvs diode.
I have replaced the controller and refunded return shipping as well. I am able to repair the controllers damaged by replacing the tvs diode.