Jump to content
Appliance Offers

Recommended Posts

Afternoon all.

 

Have a neff washing machine that has been playing up lately. On Christmas Eve it stopped spinning, washing and all we got was a hum. Checked the drivebelt and brushes and decided brushes needed to be changed. After installing new brushes all worked fine for a few days but for some reason isn't spinning now. Washing cycle is fine but for some reason doesn't want to spin on some cycles. The washer drains fine also.

 

Anyone any ideas as it's quite old I believe and don't want to keep throwing money at it.

Share this post


Link to post
Share on other sites

Book washing machine & appliance repairs

Ransom Spares

Note: The links above are needed to help keep this site running, please consider using them.

Hello Chris. Humming isn't usually associated with worn carbon brushes. If brushes are worn they either stop making a connection, or they make a very poor connection. In the fist scenario the motor is totally dead, and in the second the motor will turn but erratically, or it will be lethargic and uneven and they is usually a crackling or grating noise caused by sparking between the brush and the commutator.

A humming noise is usually more associated with an induction motor (that has no brushes) or with an electrical fault causing the motor to not receive anywhere near enough power to run but just enough to make it try. Having said that I would check the brushes again, are they smooth where they contact the commutator or is there any charring indicating poor contact? Also check all the connections and pins in the motor and motor plug. If nothing is found it could be a fault on the windings on the motr, or the armature or the pcb.

Also double check that the drive belt isn't loose and the motor isn't slipping inside the belt.

 


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your appliance Spares 

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites
On 07/01/2020 at 11:22, Whitegoodshelp (Andy) said:

Hello Chris. Humming isn't usually associated with worn carbon brushes. If brushes are worn they either stop making a connection, or they make a very poor connection. In the fist scenario the motor is totally dead, and in the second the motor will turn but erratically, or it will be lethargic and uneven and they is usually a crackling or grating noise caused by sparking between the brush and the commutator.

A humming noise is usually more associated with an induction motor (that has no brushes) or with an electrical fault causing the motor to not receive anywhere near enough power to run but just enough to make it try. Having said that I would check the brushes again, are they smooth where they contact the commutator or is there any charring indicating poor contact? Also check all the connections and pins in the motor and motor plug. If nothing is found it could be a fault on the windings on the motr, or the armature or the pcb.

Also double check that the drive belt isn't loose and the motor isn't slipping inside the belt.

 

Thanks for the reply. Completely stopped doing anything and just got a humming sound from the pump. Took the motor out, fiddled with the brushes again and started working again. The washing machine seems to drain fine but does make a humming sound when spinning from the pump. Don't think the pump is the issue as I would have thought it wouldn't drain properly?

 

 

 

Edited by Chris79

Share this post


Link to post
Share on other sites

Right. The humming may just be the sound of the pump running, which appears louder if the motor and drum have stopped turning.


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your appliance Spares 

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...