RE: Buzzing servos
I Have a kinda same question. Although mine servos are not digital they are still making a buzzing noise when I turn my transmitter on. I have a hitec receiver and servos, and using futaba transmitter. Does that could make a difference? My plane is Waco 60 and flight control surfaces moved relatively easy. I checked it manually and didn't notice any binding. I replaced a switch and battery as a precautionary action. At this point any advice will be helpful. Thanks