dougcarrol, Dyson v6 shuts off like it may be over heating, could be Dysons thermal cut out. Found this info. at the Dyson link below, Most Dyson vacuums have a built in safety system that stops the machine if it begins to overheat. May happen because the filters need cleaned/washing, machine could be plugged/blocked, floor brush roller seized from debri/hair wrapped around brush. Unplug, check filters, check for blockages, clean brush so it spins easy. Check the links below for more info. and instruction. Also note Dysons contact link, as I was informed they can also answer any questions you may have on their products. Good luck.
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https://www.dyson.co.uk/support/dc24/dc24-multi-floor/my-machine-is-not-working/machine-won-t-switch-on-or-cuts-out/thermal-cut-out
https://www.youtube.com/watch?v=rSNnOhR60fY
https://www.dyson.com/contact.aspx