Hoover dynamic washing mashine is stuck on duvet wash cycle. Won't spin and finish cycle.

SOURCE: Hoover 2305 washine machine wont spin

Your problem could be caused the interlock but it could also be that the machine is failing to drain in the time alllowed and therefore the machine will not spin, before buying a lock check the sump hose and pump area for blockages.

SOURCE: HOOVER LOGIC 1300

you need to access your drain pump and check it for an obstruction but when you pull the hose off keep in mind it might have a lot of water in it i usually use a shop vac and pull all the water out through the drain hose before removing the hose or opening the pump sorry i cant be more specific but ive never cleaned the pump on a hoover

SOURCE: Hoover Vision 1600 drum not spinning?

I have similar problem with same model unit, found brushes on motor worn to point copper contact is hitting and scoreing commutator. Easy checked, ensure power completely disconnected, lie machine on side and gently rotate drum looking in side the motor. The commutator is what looks like a circular block of copper segments which will rotate with the drum and should be evenly worn and coated with carbon from the brushes. If you see a clean copper area, usually in the center, then the brushes are worn down below workable levels. Suggest replacing should resolve problem.

SOURCE: I have a Hoover 550 MB Top Loader washing machine

Will the unit spin if you manually turn the timer dial to spin? If so, remove power, remove the clock motor from the timer, and inspect the clock and mating timer gearing for debris or damaged gear teeth. At the worst, replace the timer. You may be able to scrape or file the damaged teeth so that the timer will progress.

Testimonial: "That is great advice . Will try and see if your solution works . cheers"

SOURCE: Hoover 700LB Stops at the wash during the wash

It sounds like the timer is bad. Try another cycle like delicate, or normal, or heavy duty. If everything works on another cycle then it is probably your timer. If it doesn't work and you have the same problem, then it is probably an expensive fix. Best of luck