The power keeps cutting out after a few seconds

"If your vacuum suddenly turns off during use, see the Dyson DC58 Shuts Off While In Use problem page for possible causes and solutions.

I suspect it is the battery protection circuit cutting in. This circuit monitors the battery voltage. After the motor is first started, the battle voltage will drop due to a load of starting up the motor. The circuit allows a second or so for the voltage to recover. If the voltage does not recover in this period, it shuts down the motor on the assumption that there is a fault that is drawing too much current and will cause the battery to explode into flames. As batteries age, their internal resistance increases and they take longer to recover from the startup load. Things like cleaning the filters etc. will reduce the startup load and this will temporary solve the problem. As you can see from the first few seconds the motor runs OK, there is nothing really wrong with the machine (or in fact the battery except that it is slowing down a little in its middle age.) The real problem is the design of the protection circuit. It is too simplistic in monitoring approach and is causing thousand of Dysons owner to replace their batteries when they still have years of use still left in them. Shame Dyson, shame!"

Most likely a blockage problem. The motor is set to turn off if uses too much current for protection. I would clean the filter and dismantle any accessories, espically any spinning brushes, as these can get clogged easily.

“&&^& DYSON!!!” Paid a lot of money for a Peace of $@$* product!!

Same problem. It seems to involve the button itself. Sometimes I can move my finger to a slightly different area of the button and it stays on a little longer. Very frustrating. I love my Dyson 35 but want to through it out the window when it acts up.

The filter needs cleaning. Try running it without the filter in. If it works fine, the filter needs cleaning, even though it looks clean. This happened to me.

Bought the very first hand held Dyson had the same problem was told there was a fault with the on of button as out of warranty they gave me a small discount to purchase the new model as the problem had been rectified bought it ,out of warranty same problem never a hand held Dyson again