Question about Drills
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Posted on Jan 02, 2017
SOURCE: Makita DC18RA charger conversion
You can't use the same capacity as it gives you a very
large and expansive capacitor.
I used the max. diameter of 30mm that could go into the PCB of the model I have and it is 470uF 400V
You'll need to replace another capacitor, see my mod page !
This works !
I added another HowTo page for modding the DC18RA from 110V to 220V , you can find it here
all the components details are in it
Have fun and good luck
Posted on Jan 10, 2009
Hi again, Because of the age of these batteries, this may or may not work but you have nothing to lose. The theory here is that over time, oxides built little bridges in a ni cad battery between the anode and cathode thus shorting the battery, shocking the battery burns those bridges and if the cells are still intact it will work again. So take your stronger battery or cables and being sure to observe the correct polarity touch or brush the positive to positive and negative to negative several times. The first times will spark and then as the bridges burn the spark will decrease. Put the battery in the charger and the charge light should come on. Leave the battery in the charger until it reaches a full charge. If after this procedure you still have the defective indication, then the cells were bad and you will still have to replace the battery. Good luck, please let me know how this works for you!
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Posted on Mar 29, 2009
While the above advice is correct I curently have the same problem.
I have measured the secondary of the transformer and found it to be dead, no volts.
This transformer has a center tap that I guessing is 24v centre tapped. If any one has had any experience with this area would you please advise to email@example.com
Posted on Feb 23, 2010
SOURCE: Ryobi Model 1412001, 16vdc, 2A
Same thing was happening with my Ryobi 18V Nicad Charge + batteries. I boujght a 18V Chicago Electic quick charger from Harbor Freight tools, and just jumped the wires to the battery while monitoring the voltage with my meter. It started around 9v, and while the Ryobi Charger did nothing, the Chicago electric charger cycles on/off repeatedly till the voltage goes up to around 20 volts or so. At that time, I simply put the battery in the Ryobi Charger and it instantly went to the red "fast charging" mode. Seems it needs some decent battery in the battery before it will actually charge it. FYI. the charger from Harbor Freight #43933 cost me $4.95 !
Posted on Mar 06, 2010
You can find a repair center on the link below. You just need to put your zip code in to find the nearest one to you.
Posted on Jun 13, 2010
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