Bd155rt drill


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Seems I've got the same problem as others with this drill. Starts and works OK if I squeeze the trigger slowly or keep speed on 1 or 2, or don't squeeze all the way to top speed: guessing it's the switch somehow : but keeps stopping even without load.
Can't find a replacement. Others come at half the price of a new drill.
Wondering if anyone had any fix it tips. I've cleaned and sprayed switch with contact cleaner but no different.
Can I replace speed control switch with a basic on/off switch that fits this drill?
Thanks anyway
Ian
 
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Hi,

I like to repair rather than throw away. Can you remove the switch completely then test it using a DMM (digital multimeter) set on Ohms to determine if it is actually the switch at fault? The fault might be a poor connection or even an intermittent fault in the cable; my old but trusty Bosch drill started to behave strangely and it proved to be the cable where it entered the drill; I removed about 3" from the cable end and reconnected now it's fine again. Are the brushes OK?

Regarding replacing the switch with a different type I'd be very careful indeed; obtaining a switch with correct dimensions would be unlikely; it might work but it might also render the drill dangerous. May I suggest you ask the right people for your answer;

https://www.blackanddecker.co.uk/support/contact-us

Contacting B&D directly could save you lots of time and frustration. Good luck Ian.

Years ago I bought a cheap workshop vac and it had a speed control switch this switch was a slider; it stopped working so I investigated; the switch was a variable sliding resistor similar to this one;

1573293376287.png


Dust had entered destroying the track; I believe it was a 100 Ohms; at the time I was doing lots of vintage radio repairs and had thousands of resistors; I bypassed this linear resistor taking it out of circuit and installed an 80 Ohms 2W axial resistor ensuring it was safe. The vac is still in use; I gave it to a friend and he's added a small cyclone it's now used as a dust collector for his bandsaw.

A bit more information; I can highly recommend a novice to buy a DMM and learn how to use it; these can be bought very cheaply for a basic model through eBay; with these cheap models care is needed not to accidentally take voltage readings with it set to resistance (Ohms) or it will be destroyed.


Kind regards, Colin.
 
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Thanks Colin, agree with you. Need to understand about ohms a bit more though. Haven't found b abd d helpful up to now. Only said switch no longer available and couldn't supply a picture of a workmate top so I could refinish my old one.
Would be happy with a simple on off switch replacement. Will keep trying. Cheers
Ian
 

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