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V12 keeps shutting off in seconds, but…

V12 started shutting off after several seconds.

First, it only happened when the vacuum increased suction.

Then, it started happening within normal use. But if I started it in eco mode, it worked ok.

The thing is, once I turned it on again 3 or 4 times on a row, it started working as usual, without shutting off. Like if something is heating up so the vac starts operating as normal.

Now it shuts down even in eco mode. Still, 3–4 restarts help, and it runs until I manually turn it off.

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I’m not sure where the issue lies.

I encountered the same problem and reached out to support. The solution is to purchase a new main unit, which support sells directly outside the warranty period.

If you still have a warranty, I recommend contacting support to obtain a new main unit.

I suspect that a capacitor is faulty.

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Yeah, a blown capacitor has, in my experience, caused similar things to happen with a Nintendo GameCube. Only with the GameCube, it's worse. You have to repeatedly power it on and off for quite a while considering that you're supposed to be able to power it on and play a game as soon as you do. In any case, it does sound like a faulty capacitor is... well, at fault.

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As the other answer suggests, this is likely a problem with the capacitors - Over time they boil off and don't hold charge correctly anymore, but sometimes this can be overcome with multiple starts. My V12 Detect Slim had the same issue, where it always required ~5 power cycles before it stayed on.

I was able to fix mine by following along with this youtube video from TechFix: https://www.youtube.com/watch?v=igo1nPgb.... It's a pretty in-depth process that requires some finicky plier work, a new set of 3 capacitors, and soldering to detach the motor control board, replace the caps, and reattach the motor control board.

Alternatively, depending on where you live and what offers you can get, you might be able to get your hands on a new motor unit or a new motor core (Whole unit comes with the rear LCD display, the motor core comes without) from Amazon or Aliexpress or such (Make sure it's the right one, different Dyson models can have slightly different dimensions) - Replacing this is more expensive than getting new caps, but could still be cheaper than getting a new main unit if you're past the warranty period. And, if you can get one of these, you can follow the same general process but skip the soldering part by just swapping the whole motor instead. This other youtube video from wei han demonstrates this alternate process: https://www.youtube.com/watch?v=qXTeyXMI....

Additional note: This video shows them just prying out the start button, while the first one skips it and cuts/resolders the wiring for it instead - I found that you can actually relatively easily remove the button without damaging the housing by jamming some iFixit opening picks between the button and the housing where the "legs" are.

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romandi wird auf ewig dankbar sein.
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