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Author Topic: Checking DC50 brush motor  (Read 138 times)

Online Browntoa

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Checking DC50 brush motor
« on: August 04, 2017, 05:22:14 PM »
Got a DC50 with an obvious blown component PCB , I'm checking the brush motor with a meter and seeing a constant low resistance when I turn it manually so am I right in assuming it's probably OK AND not the cause of the damage.

Also , out of interest , the brush motor is 240v AC ?

Online dragoncurt

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Re: Checking DC50 brush motor
« Reply #1 on: August 10, 2017, 06:46:13 AM »
My mother has a DC50, I like it. I do not know anything about the PCB though so I can't help there sorry. Also how do you check the brush motor with a meter I did not know you could do that.

I hope it is supposed to be low resistance, I don't know sorry. I think some of the people on this forum will know though.


Online MVacs

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Re: Checking DC50 brush motor
« Reply #2 on: August 10, 2017, 01:42:58 PM »
Also , out of interest , the brush motor is 240v AC ?

Usually a DC motor and you would be looking at a start up voltage of 300 ish coming from the PCB.

What reading do you get from the motor when you don't turn it?

Online Browntoa

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Re: Checking DC50 brush motor
« Reply #3 on: August 10, 2017, 03:20:58 PM »
I see low resistance measurement so some continuity as I expect , I'd expect to see nothing if the motor was fried

I've changed the PCB and now seeing voltage across the contacts before the head is plugged back in but still no joy . I've given up on it now and breaking it for parts to sell on

Will take the brush head to bits and look at the motor out of interest , was just thinking of bench testing it somehow to see if it turns at all

Online Browntoa

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Re: Checking DC50 brush motor
« Reply #4 on: August 19, 2017, 10:05:13 PM »
Out of interest for anyone reading this , on strip down ithad obviously been wet at some point so there was obvious corrosion . So even though the coil was ok it was not an economic repair .

Online MVacs

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Re: Checking DC50 brush motor
« Reply #5 on: Yesterday at 02:00:00 AM »
Out of interest for anyone reading this , on strip down ithad obviously been wet at some point so there was obvious corrosion . So even though the coil was ok it was not an economic repair .

Indeed, water kills the motor.

Online Browntoa

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Re: Checking DC50 brush motor
« Reply #6 on: Yesterday at 11:35:46 AM »
And a visual check is virtually impossible without a strip down as it's enclosed in a rubber cover , soon as that was removed I could see the corrosion


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