got my brand new acr today and it was working perfectly except for a weird noise, took it apart all the way to the gearbox and the gearbox it self, lubed it up and closed it back up.
assembled the blaster and chucked a battery in it.
It does not fire now, a low hum emanated from it and it does not fire, battery wires also get hot quickly. I’ve tried reversing the polarity of the motor but it’s the same each way.
please help me, this is my first gen 9 gearbox