Had the grinder for around 6 months. Used mostly for filters brewing. This happen suddenly this morning. Good thing is on warranty and the technician will come over to check it out. Just wondering the cause of this. Sounds like the motor is not catching the gears. Any input would be nice as i think the technician will most likely say nothing. The sound can be heard in the videos. Tried my best to capture the sound with higher and lower RPM.