You were wOndering if anybody had any ideas what could'VE (or could have) happened.
If the motor is spinning but the drum is not, then there may well be a failure in the drive train. If it is belt driven maybe the belt has snapped or come off. If it is gear driven maybe a shaft has bent, broken or sheared or maybe a gear has stripped or broken.
You'll have to look and see.
Depending on the exact model, this may help (and it looks like it is belt drive)
http://www.magic-parts.co.uk/acatalog/Belle-Mixers.html
Pick your exact model and you may find some useful parts diagrams that will give you an idea where to look.
acp, August 2017
