I'm just putting the finishing touches to a A3/LB2 combo on an S900. Hit a bit of a problem.

Connected the battery for the first time and I'm getting the no controller to ESC beep sound and have noticed there zero power going to the A3. The PMU red light is on. CHecked the connection and still no joy. Any ideas anyone?

Could you provide screenshots of your set up?

Hi Jamie. I'm off to my suppliers workshop tomorrow. It appears I either have a faulty PMU or a faulty A3. Will report back with the results 5 hour drive though