Where do i start tool no power

[angellonewolf]

Was using its stoped

 

[mike 109444]

Basics. Check from mains plug pins to wires into machine. Where the cable clamping is looks a bit harsh !
Is it variable speed ?

 

[James1979]

Stopped how?

Cut out suddenly or made a big grinding noise then let the magic smoke out?

Assuming you’ve checked the fuse I would put a meter on the cable to rule out a broken wire then look into it further.

 

[brightspark]

mine knacked up it was a combined speed control and on and off switch its a chuck it in the bin job if it isnt the mains lead bust or carbon brushes worn

 

[angellonewolf]

Basics. Check from mains plug pins to wires into machine. Where the cable clamping is looks a bit harsh !
Is it variable speed ?

yes power to board

 

[angellonewolf]

Stopped how?

Cut out suddenly or made a big grinding noise then let the magic smoke out?

Assuming you’ve checked the fuse I would put a meter on the cable to rule out a broken wire then look into it further.

was warm but no smoke or smells

 

[Maker]

Any components on the board which look like they might have let the smoke out?

 

[angellonewolf]

mine knacked up it was a combined speed control and on and off switch its a chuck it in the bin job if it isnt the mains lead bust or carbon brushes worn

im expecting that but if it just provides 240 to the brushes can i just put solder a cable to the brushes and put in an in line switch its a tool thats rare used and only ever used for a clean up of tile cement floor tile adhisive etc

 

[angellonewolf]

Any components on the board which look like they might have let the smoke out?

no but to be fair im not even sure i can get near the board plastic cover over the big stuff paint over the other side

 

[angellonewolf]

I'm assuming this convirts to dc so 240 to the brushes is out

 

[dobbslc]

yes power to board

I got given a Henry that didn't work and I measured power to the switch terminals. The cable cores often break at the clamps. I'd cut 2" off and reterminate it. Do the plug end as well.

 

[angellonewolf]

I got given a Henry that didn't work and I measured power to the switch terminals. The cable cores often break at the clamps. I'd cut 2" off and reterminate it. Do the plug end as well.

powers to the board I've a wiggle on cable is not working

 

[RichardM]

My Dremmel stops working occasionally:
The thin wires to the stator break where they go into the connector terminals - I just soldered a new piece of wire in and covered it with araldite.
The off switch / speed control get grinding dust in and a good strip down and clean out restores function.

 

[Bornfree]

I'm assuming this convirts to dc so 240 to the brushes is out View attachment 322229

Brushed motors will run on ac and DC normally

 

[voipio]

In the last pic, the rotor is out, and there's 249V at the mains lead connection in the tool. With mains applied as in the photo, is there any voltage at the brushes? Is the stator buzzing, or is it possible to feel an alternating magnetic field if a small screwdriver is placed inside the stator? The tool's power switch needs to be on, of course, for these tests.

 

[angellonewolf]

Brushed motors will run on ac and DC normally

and what would happen id was dc and then changed to ac

 

[not done it yet]

While such brushed motors may well run on DC, I’m not so sure about those with variable speed controls/ electronics.

 

[angellonewolf]

quick up date a post asked on here if there is any power to the brushes areas 200v ac on side 0 on other so one of either power to the starter side is gone or the main windings are gone

 

[RichardM]

unplug the windings and check resistance through them

 

[angellonewolf]

unplug the windings and check resistance through them

dont think i can just unplug it soldering in to the board