Upper seal bar (rubber part) doesn't drop to seal bags.

MOre than likely you have a clog of some sort between the two points. Unplug the machine and try using an unfolded coat hanger to fish out whatever it might be.

It is also possible, however that there is NOT suction at the lower have and the beater bar is just making you think there is.

Replace the bag (and while it's apart , why not replace the belt as well) and you should be good to go!

Remove the bag cover and feel for suction above the motor. If their is suction there then check the bag compartment is sealed. You can drop a coin down the hose to check for blockages all the way to where the bag attaches.

Check for blockage.

Most likely place is in the tube leading up from behind the beater bar. While unplugged, remove beater bar & belt & check.

If you have a strong shop vac, remove beater bar, belt, and bag, applying suction to the tube in back of the beater bar will many times dislodge the clog with little effort, sometimes though it will take some fishing around with a stiff piece of coathanger wire or similar.

Normally when you can apply suction with the shop vac to the tube in back of the beater bar & feel suction at the tube were the bag connects, you know you've got it all and you should be unclogged. Put it back together and you should be ready to roll.

Be sure the upper attachment hose is inserted firmly into the lower hose into the nozzle. Check for suction at the end of the hose, and if there is no suction there must be an obstruction in the hose, or the filter inside the bag compartment is plugged. Be sure the brush is turning when the handle is released.

Suction cannot be lost if the motor is running normally unless the air flow has been interupted. Lift out and clean the filter so air can flow through, replace the bag, unscrew the flexi hose at his "nose", and also remove from the steel pipes. Finally drop a

The case that encloses the bag may not have been closed properly, or a part of the bag got caught in the seal of the case. Take the bag out and reinstall. Hope this helps!

If the usual clog clearing and filter cleaning doesn;t work-> I love the Dyson (DC07), but after 7 or 8 years it lost suction and needed some attention beyond filter cleaning. After much online research I found the few bits of advice that for me were the holy grail. After all of the standard stuff, clear clogs, clean filters etc..... In this order: 1) Remove & empty the canister, ***important****-leave the canister bottom lid open. 2) remove the three star screws at the top of the canister. It'll take a bit of pressure to pull the top up, there's a rubber seal. When you pull it up there will be a rod running down into the canister, leave it be, just pull up the top high enough to clear out any debris. 3) Put the top back on aligning the screws, when you lower it make sure the bottom of the rod engages with the hole at the bottom center of the canister, this is why you left the bottom lid open. Put the three star screws back in. 4) Turn the canister upside down, lid open, and keeping in mind this is thin plastic, gently tug upwards on the four fins that surround the bottom rubber seal. This part is held in by friction, so work your way around the four fins gently pulling until you work the ring they're connected to free. This will give you access to the inside of the canister. 5) remove the round perforated section by tugging upwards on it, set it aside with the fin part. 6) Take the canister to a laundry tub or large sink and holding it bottom up fill it with hot/warm water. Grasping the center section shake it vigorously and turn it upside down while shaking and a bunch of sh*t will come out. Repeat several times. 7) Dry thoroughly, you might use a hairdryer held to the center tube, but only if you can switch off the heat and use air only. Make sure its 200% dry, water will kill your machine 8) clean and replace the round perforated section 9) replace the fin section, I'd suggest pulling the round rubber part off of the fin part and setting it in place on the canister first, then follow with the plastic fin part. If you don't do it this way the rubber won't seat properly and the bottom lid won't close. 10) Close the lid, replace the canister, and staaaaaart suckin like it's brand new.

The bag is full.You need to take out old bag and replace with a new bag.

Jim

Take apart and see if wires are connected That is what was wrong w/ mine. Soldered wire now works fine.