Hey!
My Hoover Vision got collected and taken to the tip yesterday and is now to be replaced by the Miele! I researched the model of motor quite easily because the engineer left the burnt out one behind which had the model and serial number on it! So once I went onto the people's website who make the motor (ACC) I found that the motor was only capable of running a 6kg drum with a 1600 spin, therefore it caused no-end of problems!
For a bit of advice, I'd say before you let them fix it tell them that it is not acceptable,However your problem may not be related to mine because yours had the more powerfull Induction Motor on it, whereas mine had a brush motor! But its still worth telling them that something isnt right, as your not the only who has had the problem with it smoking/overheating now!
Hope it goes well
Richard