RC India

RC Equipments => Servos, Gyros and All Electronics => Topic started by: prabu85 on June 10, 2017, 06:48:39 AM



Title: Servo burnout under no load
Post by: prabu85 on June 10, 2017, 06:48:39 AM
Rudder servo got burned out under no load or signal input from TX,whereas Elevator servo was working fine,Could any one suggest how to prevent burn out.


Title: Re: Servo burnout under no load
Post by: kiran rc on June 10, 2017, 08:32:05 AM
Did you use same kind of servo's for both elevator and rudder?If not some of them have a greater voltage stability while the others don't. Otherwise, the only suspection  is a 'short' in the circuit board.


Title: Re: Servo burnout under no load
Post by: prabu85 on June 10, 2017, 11:33:05 AM
 Emax 9gm Metallic gear servo was deployed in rudder.


Title: Re: Servo burnout under no load
Post by: kiran rc on June 10, 2017, 11:59:18 AM
Emax 9gm Metallic gear servo was deployed in rudder.
It's clear from above that it's overvoltage problem. Keeping the voltage below 5.5V can ensure a good stability and avoid burns for small analog servo's.


Title: Re: Servo burnout under no load
Post by: rishabhbarma on June 10, 2017, 05:50:04 PM
If all else for eg voltage is ok, just don't use avionic crap.
A friend's servos on brand new stealth got screwed mid flight in maiden.
All groun tests were ok.
Servos simply failed.


Title: Re: Servo burnout under no load
Post by: prabu85 on June 12, 2017, 06:21:07 AM
Thanks for sharing this information.


Title: Re: Servo burnout under no load
Post by: Power_user_EX on June 26, 2017, 06:43:24 PM
Can you open the case and post pics of the PCB ? Is the internal DC motor intact ?


Title: Re: Servo burnout under no load
Post by: Imperial fire on June 26, 2017, 08:25:14 PM
Same story with my avionic servos...2 of them got destroyed under no load.,.