Dyson & Sebo Vacuum Cleaner Repair & Advice Forums

Dyson Models => First Generation "The Ball" Dysons. => Topic started by: ade555 on February 19, 2016, 07:33:01 pm

Title: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 07:33:01 pm
Hi

Hoping someone can help me, I purchase used dc25 for not much and was describe as no suction but filters replaced ect., anyway after few min I notice that the brushbar not spinning, striped everything and notice that when you spin the motor with hands at some stage there is click sound, after trying to see inside the motor via vents I notice there is 1mm of copper bit missing, to me looks like I need new motor but also tested PCB output and only showing 160v and not 320 like mentioning in the tutorial I found on here.

What would you do?

Thanks
Title: Re: DC25 brushbar problem
Post by: __russ__ on February 19, 2016, 07:42:52 pm
Have you checked the yoke loom as shown here - https://manchestervacs.co.uk/DysonForum/index.php/topic,1670.0.html

A break in the cable could be the culprit for the lower reading.

Worth ruling out before saying it's the pcb
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 08:07:00 pm
I just removed the cover to have a look if there is any visible damage but can't see nothing, will remove the yolk tomorrow completely to inspect anyway, my main concern is the actual damage to the internals of the motor, is there any chance to plug the motor to something to see if will spin at all? 
Title: Re: DC25 brushbar problem
Post by: __russ__ on February 19, 2016, 08:12:50 pm
If there is a section of the motor missing, I wouldn't even bother plugging it in - it's  :dead-dyson: I'm afraid!

This will help show where the loom normally breaks, so you'd most likely be able to see it just by removing the cover if it was broken - https://manchestervacs.co.uk/Dyson/DC25-Yolk-Loom-Assembly-916190-01.htm?ref=ac

If the brushbar reset switch was dead, you wouln't get a reading on the multimeter so suspect it is the pcb.
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 08:18:16 pm
If there is a section of the motor missing, I wouldn't even bother plugging it in - it's  :dead-dyson: I'm afraid!

This will help show where the loom normally breaks, so you'd most likely be able to see it just by removing the cover if it was broken - https://manchestervacs.co.uk/Dyson/DC25-Yolk-Loom-Assembly-916190-01.htm?ref=ac

If the brushbar reset switch was dead, you wouln't get a reading on the multimeter so suspect it is the pcb.

Thanks for your help so far

Just tested feed from yolk switch to head connector pins on bottom, nice 240v power supply, looks like new motor and PCB, oh well buy cheap buy twice  :'(
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 08:28:15 pm
little update as I'm not defeated very easily, I actually remove wiring from pcb to motor, and tested on wire end, started up and showing 335v-336v would that rule the pcb out?


another update, got the motor running as the neg wire was a bit loose, motor sparks like hell but it turns so that would rule out the PCB for 100%?
Title: Re: DC25 brushbar problem
Post by: Madrat on February 19, 2016, 08:44:29 pm
 :thumbsup: yes its just the motor you need, you have been lucky.
Title: Re: DC25 brushbar problem
Post by: beko1987 on February 19, 2016, 08:54:20 pm
Looks like your brushroll motor blew a comm segment out.  I had one the other week that had done that.  It was jammed,  then the comm segment fell out and suddenly it span fine...

New motor,  done! Chuck a new brushroll on now whilst you can combine the postage,  and end cap.  Will transform it mate,  trust me!
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 09:09:28 pm
Looks like your brushroll motor blew a comm segment out.  I had one the other week that had done that.  It was jammed,  then the comm segment fell out and suddenly it span fine...

New motor,  done! Chuck a new brushroll on now whilst you can combine the postage,  and end cap.  Will transform it mate,  trust me!

I believe the segment is still there by the sound of when I shake the motor. I don't know what the hoover is like as we only have dc08. But it definitely have good suction  :thumbsup:
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 09:13:36 pm
:thumbsup: yes its just the motor you need, you have been lucky.

Well not much luck as I was hopping for lot simpler solution as it would turn out to be very good cheap hoover  ;)
Title: Re: DC25 brushbar problem
Post by: Sids Spares on February 19, 2016, 09:14:34 pm
I'd go along with replacing the brushroll and end cap too. I always replace them when doing a refurb.
Title: Re: DC25 brushbar problem
Post by: beko1987 on February 19, 2016, 09:16:51 pm
Even with the cost of the motor it will still be cheap!  what are they,  £30? there's a how to somewhere
Title: Re: DC25 brushbar problem
Post by: __russ__ on February 19, 2016, 09:55:07 pm
another update, got the motor running as the neg wire was a bit loose, motor sparks like hell but it turns so that would rule out the PCB for 100%?

Nice result but lucky this didn't blow the pcb  :))
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 10:20:08 pm
Been honest only got this because was 5 min from my house and I had my dc08 for 10 years still works like dream then this popped up so why not. After closer inspection now will need some bits sorting out, cyclon seal is bit worn, the valve selector or what ever is called not working as it should once you pull the tube out you need to tap with you foot to close it, spring has fallen out somewhere from pedal release, I'm sure the main motor was exposed to some sort of wet dirty moisture  but it comes with all accessories like the mini turbine head, ect. and it does have brand new filters.

I'm glad I found this forum anyway loads of knowledge on here 
Title: Re: DC25 brushbar problem
Post by: Madrat on February 19, 2016, 10:33:09 pm
All easy to fix, but inspect the pedal and its attachments carefully before you order parts, easy to miss a bit you need.
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 10:56:17 pm
All easy to fix, but inspect the pedal and its attachments carefully before you order parts, easy to miss a bit you need.


well it looks like the parts are there just can't see where the spring has to go, I'm sure is the one to pull the red pedal up when you locking the hoover in upright position
Title: Re: DC25 brushbar problem
Post by: beko1987 on February 19, 2016, 11:18:25 pm
Ah, maybe check it's not an easy fix. Look up my refurb thread, it will show you but there's a tiny spring inside one end of the red pedal, and a big chunky spring from one end of the grey wheels part to the side of the ball area.

The red pedal doesnt really move, it's the grey pedal, when you push the red pedal down to recline the machine, it enters the right part of the notched bit it has, the grey pedal then springs up taking the red pedal with it. Same when you push it down to stand it up and lock it
Title: Re: DC25 brushbar problem
Post by: ade555 on February 19, 2016, 11:38:57 pm
Ah, maybe check it's not an easy fix. Look up my refurb thread, it will show you but there's a tiny spring inside one end of the red pedal, and a big chunky spring from one end of the grey wheels part to the side of the ball area.

The red pedal doesnt really move, it's the grey pedal, when you push the red pedal down to recline the machine, it enters the right part of the notched bit it has, the grey pedal then springs up taking the red pedal with it. Same when you push it down to stand it up and lock it


Oh you had to started now this will bug me all night  :))  just had a look and it looks like one of the spring that is attached to red pedal in your pic 36/37, now just need to figure out how to get that in there
Title: Re: DC25 brushbar problem
Post by: beko1987 on February 19, 2016, 11:47:14 pm
you cam get away with just taking the red pedal off,  undo the 2 correct screws and pop the ends out,  then pull the wheels back as far as they will go (near vertical with the back of the machine)  and the red pedal shoild slide out,  I did this with a dc24 the other week, their vaguley similar  machines...
Title: Re: DC25 brushbar problem
Post by: ade555 on February 20, 2016, 10:04:50 am
Well I decided to strip and clean everything, all back together now is well  :thumbsup:, refitted the pedal spring now just need to get the brushbar sorted.

I did find on ebay complete unit at £40 anyone had experience with them? looks a bit waste just paying £30 for motor when you can get original head for extra £10, but I notice there is 2 different part number some are listed and ending with -01 and the other -08 number
Title: Re: DC25 brushbar problem
Post by: beko1987 on February 20, 2016, 11:08:54 am
i dont know about the part numbers, but yes, sometimes you have to weigh up if the extra tenner for a new shiney housing is worth it, and it will be simpler than fitting new internals to an existing case!

The parts could be the dame, and Dyson just changed the part numbers mid run but I'd wait for someone who knows what they are talking about to comment before splashing the paypal just yet
Title: Re: DC25 brushbar problem
Post by: theheadschoice on February 20, 2016, 10:31:00 pm
another update, got the motor running as the neg wire was a bit loose, motor sparks like hell but it turns so that would rule out the PCB for 100%?

Nice result but lucky this didn't blow the pcb  :))

^THIS! You did get very lucky! Once you notice a section of that copper missing, you know it's toast. or if they're a bluish black.
Congratulations on lucking out, ade!
Title: Re: DC25 brushbar problem
Post by: MVacs on February 21, 2016, 09:24:19 pm
looks a bit waste just paying £30 for motor

Ours are £27.99 inc delivery (https://manchestervacs.co.uk/Dyson/DC25-DC41-Brushroll-Motor-Johnson-DC771(2)XLLG) in case of need.

but I notice there is 2 different part number some are listed and ending with -01 and the other -08 number

915499-01 was the original part number, 915499-08 is the superseded part number. The units are the same.
Title: Re: DC25 brushbar problem
Post by: ade555 on February 22, 2016, 04:38:22 pm
looks a bit waste just paying £30 for motor

Ours are £27.99 inc delivery (https://manchestervacs.co.uk/Dyson/DC25-DC41-Brushroll-Motor-Johnson-DC771(2)XLLG) in case of need.

but I notice there is 2 different part number some are listed and ending with -01 and the other -08 number

915499-01 was the original part number, 915499-08 is the superseded part number. The units are the same.


Thanks for info, I went with complete unit as I don't know how old is the PCB and will need new end cap is well.
Title: Re: DC25 brushbar problem
Post by: ade555 on February 25, 2016, 05:32:33 pm
brushbar fitted and works like dream  :thumbsup: