Help. servo turn 90degrees when plug in batt.

[aeromodelling]

Hi all flyer not sure if anyone had this issue in ur experience. Any help will appreciate.

Firstly i switch on the transmitter. Plug in the esc and servo to the receiver.
Once i plug in the battery the servo arm rotate 90 degree and returned to it normal position.
If were to install to the rudder it will rip off the rudder on the start when plug in the batt due to this 90degree pull. Not sure why this happen. Even on another receiver.

Anyone had this issue before?

Any advice will be great.
Thanks

[aeromodelling]

Problem solve.
Thread close