Omega A – Preresistances Blowers smoke from row by row

Moin! As read in the headline, I have the problem that in the “Omega A Diamant / 2,6 / air conditioning” within a three-quarter year the third resistance for the blower has smoked. In the meantime I had already changed the blower myself, because I had one, which made a better impression optically and technically than the factory installed. So smoothness of the engine is given. Has someone an idea, which still causes such a high resistance Thank you and Greez Timmee