Sorry if this is in the wrong section. I've got a Fobco Star 1/2" cap drill 3 phase, was working fine then all of a sudden it would work when switched to 'on' in one position but switched to on in the other direction it would make a humming noise and then all of a sudden it made a pop and now nothing, any rough ideas? Can spares be bought for these anywhere? Hoping it's not the motor :/