[Omaroo (Chris Malikoff)]

cant tell by listening if it is working or not

Narayan - are you placing your ear directly on the motor casing when you are trying to listen? You won't necessarily hear the subtle speed change otherwise, as some motor/gearbox systems are louder than others. You're listening for an almost imperceptible change at guiding rates, not slewing speeds. I use the test to check cables and hand box too.