Hello good people. The issue with the aforementioned washing machine is that, although during a wash test the first spin was successful, at the time of the final spin it does not finish reaching the maximum speed. He spins like arranging clothes and stops, and he does this indefinitely. My attention was drawn by an excessive sizzling of the brushes, and when checking the motor I verify that they are practically non-existent. Could this be the origin of the problem? The motor windings return normal values, the tachometer works correctly and the machine does not indicate error codes related to the motor. Thank you in advance!

That is indeed the problem. You must replace coals and clean manifold