Check to see if your programmed end points do dont pass the mechanical limts of the servo's travel.


Since the servo has gotten hot with no linkage hooked to it, it may be an issue with the "deadband width". Meaning it is allways "hunting" for true position. Or a very tight set of gears. Thus the servo motor is allways running to correct and getting hot.

Internal short circuit may also be generating the heat.

Test the servo for internal gear binding. Try using the DS-368 on a proportional channel ( elevator, rudder or aileron) and check it's movement and see if it still heats up.

Bob