The vacuum cleaner stopped working 2 years ago. I disassembled it and found out that the problem is in the worn-out brushes of the engine (you don't need to be a doctor of sciences for this). I came to this "wonderful" service to this "wonderful" master to buy brushes. To which he replied to me, turning on his psychic abilities, that my engine had burned out and I needed to bring him a vacuum cleaner to repair or replace the engine (and this is 10-20 times more expensive). But I doubted (how dare I?) in his skills of remote diagnostics of household appliances, he went to another store for brushes, where they were safely purchased and installed in their place, after which the vacuum cleaner started working, as in his youth) It works to this day.
Conclusion: I understand that everyone wants to earn money, but not in this way. Avoid such specialists!
A few months ago, a part in the vacuum cleaner broke. We contacted this place, described the problem, a very pleasant master immediately understood the problem and sold us a new suitable part. Everything came up and works fine. I would like to say thank you very much once again.