I have one (V1) and suddenly everything with the exception of one elevator servo are not working. Electric ducted fan is OK. Other servos and retracts are dead. ESC still puts out correct voltage for BEC. I tried disconnecting all servos and plugging directly into Rx. No luck. Tried different ESC, Rx's with no luck. Anyone experience the same issue? Battery is 6S Graphene 3000 mAh