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Ususally this is caused by a forein object has gotten hung in the suction impeller attached to the motor. the noise flucuates due to the housing flexes with the movement of the handle and rod. the housings are usually made of plastic and something very small can easily get stuck in it and stay for a very long time. The vacuum needs disassembled and the forien object removed from the fan housing... Hope this helps Sincerely Roger
Does the whining noise come from the motor or the brush area? If it's from the brush area, it's probably the belt. Check to be sure the belt is not worn. Sometimes belts will glass up and slip. Also, check to see if it is still completely on as it should be. You may need to replace the belt.
I woHope this helps, if it does, please place a vote for me. Thanks,
I'm sorry to tell you that the motor is more than likely done.
Generally you will have a burning smell associated with the sparks and whining. You can source a motor at your nearest hoover dealer, but depending on the age of the machine, you may just want to consider a new one. It is hard to say.
I used to sell rainbow vacuums and this latest 2 speed model does whine when it is first turned on. So you definately have nothing to worry about. I believe this is due to the fact that this motor is much more powerful than in the previous 1 speed E series model. I finally just purchased a 2 speed model after many many years of wanting one. Good luck to ya and enjoy your clean house!
The motor may have a sticking brush or a dead commutator segment. Turn off power to the unit to check for sticking brushes. Reapply power, does it now run? If not, shut it off, physically turn the motor a few degrees, and reapply power. If it still doesn't run, look for loose wiring around the motor. If it does run, replace the motor armature or the entire motor if the armature is not available as a separate part.
The bag is the first stage in your filtration. Most times what you did will draw fine dust right through the filters and into the motor itself, affecting the bearings and clogging the motor fans, throwing them off balance. The fact that there is a new noise would seem to indicate bearing problems which will only worsen unless the vac motor is dismantled, fans cleaned and bearings either replaced or cleaned and repacked.
sounds like the motor might have bit the dust.try this,unplug the vacuum and reach under where the brush rolle is and try to turn the roller by hand a few times,if you can't turnit then then the roller is jammed.take the belt off and then turn it on and see if it runs then.let the motor cool down first the motorguard might be keeping it from running.just let it cool down for about 20 minutes then try it