Question about Bosch HCBG500, 5 Pc Industrial Hammer Drill Bit Set

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Sander runs up to speed ok ,but any load applied to disc and it slows down to a stop ,plenty of speed but no torque .tried new brushes ,but this had no effect.

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  • Steve Allison
    Steve Allison May 11, 2010

    What model is your sander?

    I guessed at '500' but there does not seem to be such a model.

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  • 26 Answers

I suspected burnt armature...

Posted on Aug 05, 2009

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My sander doesn't run at full speed - it's slow. I've changed the carbon brushes but this hasn't helped.


if it sparks a lot at the brushes , then there is an armature or winding fault
sanders are cheap so junk it and upgrade

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1 Answer

How do I troubleshoot why the sander is not turning on? Have replaced switch and opened the sander to check all connections and there is nothing not intact.


Try and test the motor coil if you can to see the motor is intact. If you notice a small circuit board inside, you might as well test its electronic components, e.g. capacitors. You may also test the power cord and the pins to prove they are OK. If these options are exhausted, you can refer to an experienced service tech.

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My VBR-110 Vizio Bluray player says no disc when there is a disc. I've cleaned the disc, tried different discs, cleaned it, unplugged it for a long ass time, so I don't know what else to do.


It's the laser that is faulty. The laser retrieves information . Normally when you load a disc you will hear it speed up then slow down and as the laser reads the disc it sort of makes a noise like a small hiss or squeak.
i imagine yours will take the disc and then runs to full speed and after around 30secs you have the error message and it stops? . Depending on how your model loads the disc this can sometimes be the result of someone pulling open the drawer or pushing it shut. If it's self loading try getting a good disc cleaner .
They cost very little and it may be enough to clean the laser lense. So buy a basic cd or DVD cleaning kit . The disc will have small brushes on it to clean the laser .
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Dec 10, 2013 | Vizio Televison & Video

1 Answer

Sander doesn't spin


YOUR BALLBEARING where the disk is on mounted is the right bearing that have the problem for shure it is full of dust or completely dry it will not turn anymore SIMPLY TO CONTROL IF YOU MOVE YOUR DISK NOW ON YOUR MACHINE YOUR ARMATURE TURNS DIRECTLY WITH THE DISK thats not good the armature must stand still , replace the ballbearing or remove it and open it with a very little sharp screwdriver on the both sides solvent it out try to turn the bearing carefully until its turns without problems dry it or blow it out with a compressor and if its dry lubricate with ballbearing grease close it again and mount it again

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1 Answer

Porter cable sander lost power.


Similar problem with my 7500 2x18" belt sander. Replaced the brushes today (didn;t look bad{ had sander 3 months to sand pistol grips. Sparks were flying from motor so replaced the brushes. Skil runs very slugis like its booging down, I think the only other possible solution is new bearings for me and perhaps you..

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1 Answer

Slows down and looses power intermettently


you need new brushes or clean out the holes they go in so they move freely

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1 Answer

3725Bosch 5" random orbit sander, loss of power!!


The 3725 had an overlap winding problem in the armature allowing no full power under load, I replaced mine three times before getting a good one, best 5" on the market tho.

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1 Answer

As soon as i apply my sander to the surface it stops sanding


hi a major problem with pneumatic tools is that nobody ever seems to oil them! try droping tool oil or a light machine oil down the air inlet and leave over night and then run the tool on full ,if this doesnt work then strip the tool and clean and make sure that the blade sealing surfaces are good
hope this helps ian

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1 Answer

Burt out sander.


I would start with the carbon brushes they are easy to replace and you should be able to pick them up at any lowes or home depot

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