Was just using it today and turned it off for a moment and went to turn it back on and nothing happened. there was a slight electrical kind a smell but no smoke. we have owned ours for about 4-5 years.
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Re: Won't turn on
If there was a smell like something plastic burning it may be that something just actually burned. It does not have to smoke like a chimney (sometimes it does though - depends what is burning)... If there were no strange noises and it did not seem to run any different than usually - most likely the motor is still fine. I would inspect the cord really carefully but to do any more than that you would have to open the unit and inspect everything else.
If you chose to do so – open the Rainbow and hook up the motor directly to a power supply (hold on to the unit as it will move while starting) – if it runs then problem is in wiring. Test the cord with a tester or bulb, then the switch (or 2 switches if this is e-series Rainbow). Make sure all wires are intact. There is not much to test so you will get it done and find the problem quick.
This is messing with electricity and subjecting you fingers to potential hazard by exposing working motor so do it at your own risk and be very careful and if anything goes wrong do not blame me :-)
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it could be the wiring coming from the vacuum itself you might have to change it.can be brought at any electrical wire store have you checked the plug wiring is it all intact or has some came out from the terminals?
Please check manually the motor and see if it moves freely. Now make sure that the power plug and the connections to the switch are not tampered , check the continuity of the plug to the switch and to the motors.
If you notice any dirt or insects make sure that this has not clogged on the motor. If so clean using a degreasing spray- WD40- would be recommended.
If the motor is tight , lightly oil or degrease using the spray while manually rotating.
Once this is done connect the power while taking all precaution. Use the meter to check the flow of the circuit to the switch and to the motor. If there is a trip switch see that it is reset.
If there is power to the motor and still it does not work the brushes might be dirty and might need a cleaning/ reset.
Sounds like poor electrical contact between the base and the bag compartment. If you separate the base from the bag compartment (press the button at bottom front of bag compartment, then pull or lever the two apart) you will see the electrical contacts - they may need cleaning, or perhaps bending VERY SLIGHTLY to help make proper contact. Otherwise, something in that same area may be damaged and need repair. Good luck!
There is a relay back on the master unit. When the hose is plugged into the inlet the metal on the coupling completes the electrical circuit to the relay. In your case the coupling has a split and the circuit continues to the switch in the handle. As long as there isn't any conductive surface left across any of the contacts in any of the inlets, the relay is hung up. I never heard of that happening until today when I responded to the exact same problem on a different machine. The relay needs to be replaced.
The "screeching" on the other hand should have nothing to do with the relay. That sounds like a motor bearing without proper lubication and/or going bad.
Is the overfill valve (the yellow thing) in the waste container stuck in the up/full position? Maybe it just needs to be rinses welll to avoid it being stuck and shutting off the vacuum portion of the cleaner.
did you ever find out the problem with your rainbow? Mine did the same thing today- turned on the switch yet nothing happened. Think it needs a new switch???? Do you know how to get canister apart after taking out first screws?
If you are getting a motor smell, then either something got into the fan and stalled it, or the motor went bad. Afraid it will have to be taken apart and checked. Can you turn the brush roll, if not there maybe a problem there.
I had a similar problem with a Shop Vac. The solution was to disassemble the power switch and polish the metal electrical contacts to remove any oxidation caused from humidity. Tedious and time consuming but effective.
The on/off switch in Hoover Windtunnel upright vacuum cleaners is operated by a lever in the handle assembly. remove the two screws on the back ovf the vacuum and see if the lever has bypassed the switch assembly. if so, re-assembly should fix the problem. It is also possible that the switch activating lever has broken. If so, replace the activating lever.