17-01-2019, 08:56 PM
The spline in it doesn't turn under power and there's no humming or anything coming from it. You can always hear the motor running even if the arm isn't. You can also feel the crunching or skipping when it's a stripped gear. The electronics in them are so tiny, I'd have no idea what to look for in an electrical fault.
![[Image: SaitoFS82b.jpg]](http://www.kingslynnmodelshop.co.uk/images/SaitoFS82b.jpg)