gy-401 help

i just got a gy-401 with the 9253 servo.(upgraded from some centrury non HH gyro and hitec 425 servo)

when i turn on the rx power, the gyro goes through its initialization then the tail rotor servo starts humming, like it is binding. I've been over the whole tail rotor control system at least twice and everything is fine, no binding anywhere.
i have never used digital servos before, has anybody else had this problem?


the heli is a raptor 30 v1
hitec 425 servos on everything but tail
radio - futaba 6txa (in heli mode)
hitec 7 channel fm rx
gyro - gy-401 with 9253 servo

[rotorz]

Servos will buzz sometimes, but not one I come across yet with my digital stuff. Just for the sake of doing it pop of the link to the tail at the servo end and see if it still does it. In any case a quick call to your local heli shop will no doubt help. I am now going to play with mine and see if I can get it to hummmmmmm!

Happy Landings

[Andrew]

Many digital servos tend to hum. I've been told by others more experienced than myself that this is normal.