Makita 12volt drill

Makita 12volt drill

This topic has 6 replies, 5 voices, and was last updated 18 February 2018 at 08:45 by John Rudd.

Viewing 7 posts - 1 through 7 (of 7 total)

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17 February 2018 at 18:11 #341960
Speedy Builder5
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@speedybuilder5
My Makita 12volt drill has lost its power. Bought a new battery, even used a different charger, but only 30% of power / speed available. Do I suspect the windings or the variable speed trigger unit ?
BobH
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17 February 2018 at 18:11 #18851
Speedy Builder5
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@speedybuilder5
Drill loosing power
17 February 2018 at 18:57 #341971
Brian Sweeting 2
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@briansweeting2
Probably the trigger unit.
17 February 2018 at 20:39 #341981
daveb
Participant
@daveb17630
Not sure if it's the same but I have a spare trigger from a 9v Makita drill. Gratis, if it's any good to you send me a PM..
17 February 2018 at 22:27 #342003
Hopper
Participant
@hopper
Brushes are quite often the first thing to wear out on electric drills. Could be worth checking.
18 February 2018 at 07:11 #342025
Speedy Builder5
Participant
@speedybuilder5
Thanks for the offer Dave B, but mine is 12v. There is a 3 pin "package" at the rear of the motor (Thyristor ??) so I guess that the 9v trigger is slightly different to the 12v one. I couldn't get the trigger apart to see what was inside it. The motor smells a bit "motorery" as if its worked a bit too hard at one time – probably so as I built our house with it.
BobH
18 February 2018 at 08:45 #342037
John Rudd
Participant
@johnrudd16576
The thyristor is probably a mosfet, typically an IRF530…..from battery drills I've encountered..

If you can access the connections on the back of the motor, might be worth checking to see if its receiving the full battery volts…

Edited By John Rudd on 18/02/2018 08:46:27
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