Tunze 6095 not working

[akbuuur]

Hi there, I got a 6095 (older version) recently and just placed it in my tank and its not working. I can hear a buzzing sound from the pump so I know it is receiving power but for some reason or another it's propeller is not moving. Any and all help would be greatly appreciated!

Akbar

 

[rvitko]

My best guess is the propeller is not stuck to the magnet anymore so the magnet spins and the propeller does not. I would check the propeller assembly first.