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Old 11-02-2005, 01:05 PM
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Join Date: May 2005
Location: Comayaguela, HONDURAS
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Default RE: Servos JR 8411 always humming

Hi, I had the same worry with the 8611 I have, but it seems that digital servos always humm, it is them always centering themselves. When you have everything in neutral position, the weight of the surface makes them humm like that. However, make sure that you have no binding in the control linkage and that the vibration is not more than that humming noise.
As I was told here in the forums, digitals always make that humming noise and there is no problem with them.
Hope this helps and someone else will probably give you a better explanation, I don`t think you have anything to worry about.