Dremel not working

[BobL]

My Dremel is about 5 years old and has had "light use" during that time.
About a year ago it started playing up, stop and start intermittently, would not start without winding the chuck by hand but eventually that did not work either.
The RPM indicator was flashing at slowest speed and if I held the "+" button down it would eventually get going if the RPM indicator managed eventually to get to 10-12.
Now it does not work at all and the speed indicator does not show anything when switched on

I have changed the brushes without luck.
I wonder if anyone else has experienced this and what they might have been able to do about it, before I take it apart and try to find out what is going on?

[Black Ned]

It may be jammed with fine dust - had a similar problem with an exhaust fan in our en-suite. It was caked with talcum powder. Use a leaf blower to spin the fan blades and exit the powder. the sprayed WD40 all over the armature. turned on the exhaust fan, hit it with the leaf blower and its still working as good as new many years later. The exhaust fan was installed when I built the house in 1976

[BobL]

Hello Ned,

Thanks for the response.
It does not appear to be jammed because it spins quite freely by hand but I will try that anyway.

[China]

Speed controller is faulty, mate in lighting ridge had a similar problem replaced a small circuit board and all is well

[BobL]

Speed controller is faulty, mate in lighting ridge had a similar problem replaced a small circuit board and all is well

Thanks, I suspect the circuit board, but it costs $90 I wondering if it is worth it?

[China]

Probably not if you can find some one who good at electronics they can most likely determine which component has failed and just replace that

[Ubernoob]

I had the old style one that was pretty much faulty from new, also tried new brushes with no luck.

It turned out to be a bad connection on the stator, they little connectors on mine pretty loose. I had no option but to solder it which didn't seem to last all that long. I bought a 4000 to replace it but I don't really like it so I'm going to try to find another brand and give that a go.

[BobL]

Probably not if you can find some one who good at electronics they can most likely determine which component has failed and just replace that

I'd have a crack at it myself but most of the components on the board are gooped to the board or to each other with what looks like black epoxy.

I am almost resigned to getting another but this is what gives me the pips.

I just need the tool, I got the kit with all the accessories last time, most of which I never use. Plus SWMBO has a kit with most of the same stuff in it.

[China]

Is it some thing you use all the time, you may want to consider upgrading to something of a professional nature such as this

Series SR CE Motor with Foot Control in plastic housing (http://www.foredom.net/sr-fct2ce.aspx) twice the price of a Dremel but will out last 100 of them.

[BobL]

Is it some thing you use all the time, you may want to consider upgrading to something of a professional nature such as this

Series SR CE Motor with Foot Control in plastic housing (http://www.foredom.net/sr-fct2ce.aspx) twice the price of a Dremel but will out last 100 of them.

I've looked at those sorts of units (especially the bigger 1/3rd HP ones) but I'm barely enough of Dremel user so I can't really justify $365 + hand piece, for something like that.

The other thing is the heap of Dremel accessories that I already have and do use occasionally - I'd hate to chuck all these out and start again.

[China]

If you only use off and on a bit costly, just so you know the Foredom H-30 hand piece will accept Dremel accessories

[Yanis]

I'd have a crack at it myself but most of the components on the board are gooped to the board or to each other with what looks like black epoxy.

I am almost resigned to getting another but this is what gives me the pips.

I just need the tool, I got the kit with all the accessories last time, most of which I never use. Plus SWMBO has a kit with most of the same stuff in it.

The old potted circuit trick. Don't you hate that? Probably done to reduce the effect on the circuit of vibration but sometimes done so that you cannot repair it and make you buy a new one. Most likely the former in this case though. (Some smarty pants mfgs. sand the markings off the chips which is really "dog in the manger".

John

[rob streeper]

Foredom is the way to go. I have a Dremel and haven't touched it since I started using the Foredom tool. Versatile and powerful for a small electric tool. 1/4" chucks allow the use of die grinder bits.

[BobL]

Was in at my local Bunnings buying some bits and pieces and happened to wander past the power tools and just have a look at the Dremels.

In behind the latest display models and accessories was a 4000 series Dremel that had obviously been a demo model as it had the usual zip tie lock downs on the trigger etc but it had no price tag.

I knew that Bunnings no longer sell the 4000 because I had asked at another store on Sunday and they said they haven't stocked them for some time.

I thought, "I wonder if they would sell me that demo tool", so I looked around for one of the older team members that has been at the store for years and he knows me.
I explained that mine had just died and the fix up costs was at least $90 and that I already had most of the accessories and all I needed was the tool itself.
He said "Let me check on the computer".

While he was on the computer various customers were coming up and asking questions so his enquiries dragged on for some time.

After much Uhming and Ahhing he confirmed it was no longer stocked at Bunnings and he said he would need to go talk to the manager.

Another few minutes went past and he came back with a piece of paper with a signature, an item number and $45 written on it. "Take that to the checkout he said"

A small win and a demonstration that you can but ask.

[China]

Good one!!

[Handyjack]

Well done!

[John Saxton]

a good win for you Bob, a feel good story we all like to hear from time to time.My old Dremel went cactus on me a few years ago ,motor would run but not at the business end so it needed a new "clutch", a rubber/plastic grooved connector that over time had perished to the point where the grooves were of limited use in contact between the armiture & the chuck.It had done a lot of work so did.nt regret spending the few $$$ to bring it back up to speed...pardon the pun!

cheers:)

[Bohdan]

John I have exactly the same problem with mine. Could you please explain where and how you obtained the required spares to fix yours up.

[John Saxton]

John I have exactly the same problem with mine. Could you please explain where and how you obtained the required spares to fix yours up.
I got the part from my local bloke who got it from the https://www.google.com.au/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0ahUKEwio4P31hcPOAhVEG5QKHbhVBj8QFgg8MAI&url=http%3A%2F%2Fwww.hobbytools.com.au%2Fdremel-spare-parts%2F&usg=AFQjCNFj99cGK8-nsdtVZyHZ-882VpCFfQ

Dremel Flex Coupling 2615294309 (http://www.hobbytools.com.au/dremel-flex-coupling-2615294309/) this is the clutch coupling.

Cheers