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Author Topic: DC 25 Brushbar not spinning- double checking myself  (Read 1264 times)

Offline Actionkat

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DC 25 Brushbar not spinning- double checking myself
« on: December 15, 2015, 10:40:40 PM »
Evening all, let me start by saying fantastic resource, great to see some much in depth help at my finger tips.

Like many I have a non spinning Brushbar.
Just trying to run through the best check list to solve my problem
First thing I've checked is I've got AC power from the clip that the Brushbar connects too, which I have 235 volts when reclined & switched on.
I tested the resistance of the motor & got no reading so assume it's dead.
Replaced the motor & checked I have resistance on that, which I do.
Still no joy.
Now tested DC power while running the vac in reclined as I did to check AC power to head.
I don't get a reading so do I assume the PCB is dead too...
The only reason I'm asking is before I replaced the motor I did have DC power to the motor, so that's what lead me to the motor being dead.
I have had the switches out to test resistance to those & all seemed OK, hence AC power to the head connector.
seem to be chasing & didn't want to buy more spares till I was sure.

To recap if I have AC power to the head connector then all my switches & loom are good ?
No longer DC VoLTE when Motor is connected, motor is new so PCB is the fault now.

Many thanks in advance, sorry for the long winded questions

Online MVacs

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Re: DC 25 Brushbar not spinning- double checking myself
« Reply #1 on: December 15, 2015, 10:47:25 PM »
Have you got power still coming out of the machine? You may have had it once, but not now perhaps?

Offline Actionkat

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Re: DC 25 Brushbar not spinning- double checking myself
« Reply #2 on: December 15, 2015, 11:03:21 PM »
Well the plot thickens, just before you replied thought I'd double check my findings.
Head attached & reclined ready to retest my DC volts while it's running.
Switched on & had a blue spark flash in the Brushbar head,
Hadn't got any meter attached or anything luckily.
So now I'm even more puzzled,
Just took off the head to check if I still have AC power to head connection, which I do.
Popped out my motor & still got resistance across the terminals so presume that hasn't blown in anyway.
Am I maybe looking at loose or  shorting wires in the PCB to motor area

Online MVacs

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Re: DC 25 Brushbar not spinning- double checking myself
« Reply #3 on: December 15, 2015, 11:32:23 PM »
I'd be more inclined to go for a PCB at this stage.

Offline Actionkat

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Re: DC 25 Brushbar not spinning- double checking myself
« Reply #4 on: December 16, 2015, 12:40:51 AM »
So working on your post, I've stripped the PCB out the head,
Plugged that into the head connection,
that way I can slip my multimeter directly into the PCB sockets, & see what's going on
So switched on, no DC reading from the PCB & while it was on,
seen that little blue spark coming from the PCB,
Attaching a pic, it came from the grey resistor like part, you can see a small black dot on the right, that's where the spark comes from.

So looks like a new PCB it is then,
Many thanks for the replies.
Will post update once the PCB arrives


 

 

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