Last week the cordless Hoover made so much noise even ear defenders where not enough.
It was vibrating so much the dust box was coming off on its own.
Opening up didnt reveal anything, and the vortex/motor assembly was quiet once removed.
It was bought 8/6/2020. 2.5 years later and the fan blade was thick dust.
Motor part number.
Never did get to the bottom of the noise.