Hoover dynamic next no spin
Hi
I have a hoover dynamic next washing machine that stopped spinning. I took the back off of it to find that, as expected,the brushes were completely worn. I replaced these and put the machine on a cycle. About 1min into the cycle I could hear the motor making a sound like it was away to start then a loud bang that blew the fuse. Took the motor out again and checked everything was put in correctly which it was. Checked it with a multimeter and there was an open circuit over motor so I guessed it was broken and ordered a new one. Just put that in and its still not spinning. Will run through a whole cycle as if its running OK but it just doesn't spin at all. Np fault codes are being shown on the screen.
Any ideas?
Thanks
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Hoover Dynamic Next not spinning after motor and brush failure
- The problem
- A Hoover Dynamic Next washing machine stopped spinning. The original motor brushes were found to be completely worn and replaced, but shortly after restarting the machine there was a loud bang and the fuse blew. The motor was then found open circuit with a multimeter and replaced. With the new motor fitted, the machine completes a full cycle but still does not spin, and no fault codes are shown.
- Likely cause
- Most strongly supported diagnosis is damage to the main PCB caused when the original motor failed, or a poor motor connection such as an improperly seated motor plug or pushed-out pins in the connector. The exact failed part was not confirmed.
- What fixed it
- Recommended action was to check the motor plug, wiring harness and connector pins for poor connection or pins pushed out of place. If no wiring fault is visible, inspect the PCB for obvious physical damage after the appliance has been unplugged for at least 10 minutes. Advice was to be cautious about replacing the PCB unless damage is clearly visible, and to consider returning the replacement motor if appropriate. The exact repair was not confirmed.
- Checks to try
- Motor brushes found completely worn
- Motor measured open circuit with a multimeter after fuse-blowing event
- No fault codes displayed
- Check motor plug is fully inserted
- Check connector pins have not been pushed out
- Check wiring harness for obvious problems
- Inspect PCB for obvious physical damage after unplugging
- Parts or tools mentioned
- Motor brushes
- Replacement motor
- Multimeter
- Main PCB
Safety: Unplug the appliance for at least 10 minutes before touching the PCB. Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
Hi Jim. Unfortunately there is a chance that when the motor blew, it damaged something in the main PCB. But it's also possible there could be a dodgy connection somewhere. The main thing to check is the motor plug to make sure that it is inserted properly and that none of the pins have been pushed out so that they are not connecting inside, which can happen.
If you can't see any obvious problem with the wiring harness and connection, and we are assuming that it is the correct motor and there is nothing wrong with it, then it might be worth seeing if you can see anything blown on the PCB. However, make sure it has been unplugged for at least 10 minutes before touching it as some of them can hold a nasty electrical charge even after being unplugged.
Don't mistake any black soot on the printed circuit board that wipes off for anything untoward as it is very common for resistors that get very hot to attract a lot of dust that turns black. You should know if something is physically blown. Unfortunately these PCBs can be expensive and you are in a tricky position. I would be very cautious about replacing the PCB, particularly if you cannot actually see anything wrong with it. It might be advisable to see if you can return the motor?
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