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Yannis

Member Since: 02 Feb 2015
Location: Oxfordshire / Milan
Posts: 408

2015 Defender 90 Puma 2.2 CSW Corris Grey

Dremel decided to try and quit....

Hi,

Been giving the dremel a hammering and it decided to get very hot and have a little smoke.

Now, if I turn it on it runs very slowly and immediately gets hot and starts to smoke again.

Having seen you can buy all the parts online, I stripped it down. Everything looks fine inside on the boards, the only thing I have spotted is this tiny burn;

Click image to enlarge

Is this a sign that one of the windings has a short and has cooked it self?

I can replace the part in the picture above, but it’s the most expensive part on the list, so just wanted a second opinion before I clicked buy.

Cheers

Yan

21st Jul 2019 3:55pm

Swine&Small

Member Since: 20 Mar 2017
Location: Norfolk
Posts: 1223

Sounds like it is cooked

When this happened to mine ,I took the opportunity to upgrade and get a new one as the cost of new versus repair was not that great I thought. Also , if you have given it a hammering then it may also have worn other bits that are yet to fail completely .

1983 Series 3 Pick up in Marine Blue
1967 Morris Traveller
1966 Morris Convertible
2012 VW T5 Camper
Quod Abundat Non Obstat.

21st Jul 2019 4:25pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4216

2007 Defender 110 Puma 2.4 XS CSW Java Black

If you've got a compressor, chuck the dremel and buy a micro/turbine grinder. One will run fine of a 50l DIY compressor. They are much lighter and easier to hold than a Dremel with no highly strung motor to burn out. 2007 110 TDCi Station Wagon XS

21st Jul 2019 5:44pm

williamthedog

Member Since: 29 Dec 2012
Location: south wales
Posts: 3441

Usually when the armature burns out the field coil isn't far behind either. In work I replace both and a set of brushes on drills/breakers etc.

21st Jul 2019 6:28pm

Yannis

Member Since: 02 Feb 2015
Location: Oxfordshire / Milan
Posts: 408

I am actually on the look out for some air tools.

Are there any brands to look for?

22nd Jul 2019 12:01am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17442

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Personally I favour CP (Chicago Pneumatic). They tend to be pricey but are industrial tools. At the cheaper end of the market I have had reasonable performance out of SIP tools.

22nd Jul 2019 7:08am

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4216

I’ve got the. Chicago Pneumatic air micro grinder and love it. If you get one, make sure you keep it lubed, they don’t last if you run them dry. 2007 110 TDCi Station Wagon XS

22nd Jul 2019 6:35pm

TJH1985

Member Since: 22 Aug 2016
Location: Midlands
Posts: 238

Which model is that @bluest?

I’ve always fancied one

22nd Jul 2019 9:19pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4216

This one https://www.cromwell.co.uk/shop/power-tool...PT2696500A 2007 110 TDCi Station Wagon XS

23rd Jul 2019 5:23am

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