Question about Dyson DC07 Bagless Upright Cyclonic Vacuum

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Need my Dyson repaired!

I have the yellow D07 model--a few months ago, it started making a high-pitched 'hissing' sound when I would remove the hose to use it for cleaning. I also noticed the hose wasn't picking up like it should. Naturally, my husband and I took the hose apart looking for blockage--there's none and it still does it. Now, the problem's worse. It hisses even when I use the vacuum and not the hose. Also, it's not picking up like it should, and it has shut itself off a few times while being used (I'm assuming to keep from overheating). My husband did a thorough cleaning of the filter, as we were convinced this was the problem--but, no, it still hisses and acts up. Now I'm afraid to turn it on at all. I've had it too long to be under warranty and I can't seem to find any local repair shops in my area. Help!

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I had a similar problem - the hose had very low suction and made a loud hissing sound whenever I went to use it; and there also seemed to be some overheating at the bottom. I spent a lot of time checking the vacuum for clogs, from top to bottom, over and over (including the u-shaped piece already mentioned, and the filters) and made sure everything was completely clear and clean - and yet it made no difference. It was really frustrating and I was ready to go out and buy another brand vacuum cleaner! In desperation I called Dyson customer service, and a very helpful young lady quickly figured out the problem and talked me through how to fix it. The culprit was a rubber seal ring that wraps around the very bottom of the inner assembly inside the clear plastic bin where all the dirt collects. Set aside the clear bin, and you will see what looks like a fat black rubber band approx 1" wide and about 4' across. It has grooves on the inside that match ridges at the bottom of the silver grey cylinder. Mine had slipped out of the track and had ridden up the cylinder about an inch, and hence there was no seal and dirt was escaping. This was causing the problems and way overclogged the hepa filter. I just had to slip the rubber seal back down into place where it belonged, and also thoroughly wash the the filter, let it dry overnight and put back in. After that the hissing noise was gone and I again had suction in the hose. It was a very simple fix, and yet it wasn't something I would have known to look for - and I could have very easily have ended up spending money unecessarily at a repair shop. And yet nowhere in the leaflets or online instructions that I read was any mention made of this seal and the importance of making sure it's properly in place and how easily it can mess up the cleaning action.

Posted on Jan 25, 2010

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There is a u shaped piece in the back of the machine at the bottom that can be removed, check that for a clog. also there are two filters, the one you wash and there is also one under neath the cup assembly.

Posted on Jan 12, 2009

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