Power head does not activate

Its possible if the head is belt driven that it has clogged with fibres or could even have snapped. Unplug the vac, turn it over and have a look, you may need to remove a cover plate first.

Things You Will Need

• Dyson DC07 power cord



• T15 Torx-bit screwdriver



• Small can



• Camera or cell phone with camera



• Flat-head screwdriver, 3/4-inch or smaller



• Needle-nose pliers

Tips

• Do detach the black wire that goes to the motor as it does not require removal.

Warnings

• Do not work on the power cord when it is plugged in.



• Do not force the plastic-covered connectors from the switch or you could break the male ends. Pull them off firmly but gently to avoid breaking the terminals.



• Do not apply too much force to the plastic arms that hold the housing in place. The plastic arms are fragile and may break easily.

References

• DysonMedic.com: Dyson DC07 Motor Replacement Guide

1 - Unwrap the power cord from the Dyson DC07. Detach the handle of the vacuum cleaner by pressing the release button. Pull the handle from the hose. Slide the hose down the wand and push the button at the bottom to release the hose from the machine.

2 - Press the button at the top of the dust bin handle to remove the canister bin assembly from the Dyson DC07.

3 - Lay the machine on with its back with the power switch facing upward. Locate the Torx screw directly beneath the switch actuator. Remove the Torx screw, turning it counterclockwise. Place the screw into a small can so you do not lose it.

4 - Remove the switch box housing held in place by the Torx screw just removed. Carefully pry upward on the two plastic arms that clip the housing in place. Take a picture with your cellphone or camera of the open housing to make it easier to reinstall the wires where they belong in the channels and spaces provided.

5 - Center the needle-nose pliers on the female connectors from the power cord attached to the switch. Apply equal force to pull them from the male ends of the switch. Also detach the two wires that connect together within the housing, identified by the clear plastic connector between them. Depending on your machine\'s manufacture date, the wires might have different colors. For example, they may be white and brown, all white or one could be blue. Disconnect a total of four wires -- two from the switch and the two connected together. Leave the other wires alone.

6 - Trace the electrical cord on the machine until you reach its protective cover where it enters the Dyson DC07. Lift up the cord protector to remove it from the vacuum. The cord protector has slotted sides that fit within the plastic. Slide the cord protector from the power cord.

7 - Remove the plastic covers that protect the female ends on the power-cord wires that connect to the switch. The new power cord does not come with these. Insert the tip of the flat-head screwdriver through the top of the plastic connector with two internal ridges. Lift upward and away to pull the wire free from the connector. Repeat for the other wire. Push the female end into the plastic connector until it snaps into place. Repeat for the other power-cord wire.

8 - Thread the new power cord through the cord protector. If you have trouble pushing the wires through, reach in with the needle-nose pliers to pull both wires through the rubber protector.

9 - Reconnect the two separated wires back together by inserting the male end into the female end of the other wire. Reconnect the two wires from the power cord to the switch. Reinstall the switch housing on the machine. Align the wires in the channels provided to keep them from being pinched or pulled out when you reassemble the housing. Look at the photo you took earlier as a guide, if necessary. Insert the wire that goes to the motor in this channel and the white wires connected together to the left of the switch in the area provided.

10 - Put on the switch housing cover and secure it with the screw you removed earlier. Reassemble the vacuum in the reverse order you dismantled it.

I’m happy to help further over the phone at https://www.6ya.com/expert/charles_6bf94c079488b145

There are four points of connection to get power to the nozzle, any one of which can cause this condition, or an on/off condition. They are the connections in the neck of the machine itself where the hose is inserted in front. The second is underneath the hose handle, where it connects to the two pronged sheath cord. The third is at the lower end of the sheath cord where the power nozzle cord connects. The last is the reset itself. That's what I check first when one of them is brought into my shop, because, believe it or not, most people don't know that there's even a reset there. If the little red button is sticking up push it down firmly but not hard. It's possible to push the bottom right out of the reset unit itself. If the nozzle doesn't activate after pressing the reset, start by disconnecting the power cord that goes to the wands. Check for blackened, enlarged connection openings, or charged, blackened prongs. If no problems found there, continue on up the handle checking each connection point for these conditions. If you find the problem at any of the connection points both parts must be replaced, the male and the female ends. That usually means replacing the cords themselves, as the ends are not available separately. If the power nozzle still refuses to run you or a qualified repair person will need to open it up to check the motor itself to see if it's any good. Once the faulty part,(s) are found and replaced it should start right back up and run normally.

HI There, When a Kenmore power nozzle cuts on and off, this usually indicates that your electrical hose has gone bad and has a short circuit somewhere. You can try and troubleshoot the hose to find out where the short is by trying to determine what position the hose is in when it cuts on and off, and try to isolate the short circuit by spinning the hose on both the end that plugs into the canister, as well as the end that plugs into the wand. Sometimes the short is in the wands, or even the swivel neck assembly on the power nozzle where the wands connect. I would say 9 times out of 10 though on Kenmore canisters, the problem is in the hose. Kenmore is actually manufactured by Panasonic, and the two brands use a lot of the same identical parts, including the electrical hose (most cases). If your Kenmore has a two position switch, with a setting for floors and carpets, then here's a link to the corresponding Panasonic hose that you can buy. The Panasonic hoses are a little more expensive then Kenmore, but the huge benefit is that they come 100% completely assembled, where as the Kenmore hose has to be assembled (which is extremely difficult even for me to do). Panasonic 3 Wire Electrical Suction Hose To Fit Kenmore Canisters On just a handful of Kenmore models, an additional modification has to be done with the internal switch. Kenmore must have had the hose modified so you'd have to buy the genuine Kenmore part, but luckily simply switching two wires on the switch will allow the Panasonic hose to work. Try just plugging in the hose into the vacuum first, and if it still doesn't work properly, then you can modify the switch. If you find that the short is in the wand or swivel neck, just use the comment field on this repair page and let me know, I'll be happy to follow up and walk you through either of these repairs as well. If this was helpful to you, please be so kind and rate the repair, or leave some feedback for me. This is greatly appreciated. Chris Jones GoVacuum.com

My power head failed due to the handle switch. It comes apart with the Phillips screw under the vacuum kill slider. Check for continuity across the switch contact solder points.

Sounds like you have wires crossed at the switch. The 2 wires coming in go to the center posts, 2 to the power head & 2 to the main motor.

You may not have power to the power head. Check the plug at the neck of the power head, also the wand connections to make sure they aren't burnt. Most of these powerheads also have a circuit breaker on the top of it, press it to see if it will re-set. At the end of the hose handle, there is a female plug where the wand plugs into, push it ans see if it will move inward or not. If it does, then it has broken loose inside of the handle and isn't allowing a connection to the wand. The switch on the hose handle may be bad. The power head motor could be bad. These are the most common problems when the power head won't run.

Did you push the reset? Check where the plug from the power head goes into the end of the handle. Sometmes the female plug gets pushed in to far, then the male part can't plug in and you will have no power to the power head. If this is the case, the the tabs on the tube inside the handle broke off and allowed the female plug to be pushed inside the handle. The other is the switch in the handle is bad, motor could also be bad. If you go to sears.com, click on the parts link, put in your complete model number and you will get a parts list and picture breakdown to look at and you can order parts here also.

Sounds like there is definately something stuck inside it. You;ll need to dismantle the floor head carefully using a screwdriver. Make sure your machine is switched off though if it is a power head and not an air turbine turbo head. Once inside check the main roller brush as well as the side caps as these can become clogged. Also check the main dirt channel leading to the pipes of the vacuum. 
Dont forget to rate, thanks.

Here is a pix.