Filament transport failed

Hello all,

Have a problem with the filament transportation.
The transport wheel do not rotate but only vibrate.
making the nozzle clean so there is no blockage.
and it is possible to manually rotate the transportation wheel.
what can it be?


same issue with us, any suggestions on getting this fixed?

If the engine is in order, the sprocket will mill through the filament rather than “vibrate” . For me this looks like a weakness of the engine or the power supply.