My ninebot es2 got small cable melting. So I changed controller but it is still not running, when I pressed turn on button nothing happened. I checked the battery, it is blinking blue, and when I try to charge it, then charger is blinking green and red. Battery on output have 3.5 volts. I also reset the BMS with the button, than it started blinking on red and after that, it started once again blinking on red. Does anybody have a similar issue? How did you solve it?