Question about Dewalt DC920KA Heavy Duty Xrp 18V Cordless Drill/Driver

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Speed control transistor

I recently burned out the speed or voltage regulator transistor. the numbers stamped on the transistor are'nt the actual part numbers. does any body know the part numbers so I can just replace the damaged part not the whole switch. Thanks.

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If ur drill is DW988 use switch # 152274-19
if ur drill is DC925 use switch # 152274-25
see www.ereplacementparts.com for parts & diagram

Posted on Jul 26, 2008

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Craftsman cordless 1/2 19.2 m#315114852 stopped no smell turnd variable speed b/f worked again 4 a week then stop ,opened up cleand plug on trigger down pushed tight still nothing


could be a faulty directional control switch
have an appliance shop check it out
motors seldom fail as the voltage is not exceptional to cause a burn out

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1 Answer

The drill suddenly just stopped working in the middle of the job - the battery is good but it doesn't seem to be getting any juice the worklight will not even come on.


If you can to take apart the drills, put the battery directly to the motor. If it is turning the , probably the switch is faulty. If it is a controlable speed drill, check the FET transistor. I recently replaced the FET in a Ryobi drill. Cost $5 and workin glik ebrand new.

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What year made ryobi model 1802p


On Ryobi & Ridgid tools the first part of the serial number is the date stamp. It may start with one or two letters (older models have no letters) then a series of numbers, the first four numbers are the date stamp. The first two numbers are the year and the second two numbers are the week it was made. A tool with the serial number CS0812 01234 would have rolled off the assembly line the 12th week (third week of March) of 2008. This does not account for the shipping, storage, stocking time to get it on the shelf for you to buy.

Mar 11, 2012 | Drills & Drill/Drivers

1 Answer

Motor turns a fraction of a turn and stops. I've


With an ohmmeter between the prongs of the power plug and the switch turned on, rotate the motor and watch for a drastic change in the resistance. Theresistance should be fairky low.

IF during the rotation the resistance goes way up, there is a failure of an armature winding.
I notice it says variable speed, so the above may not work. The next plan is to bypass the speed control to see if the problem might be with the control... I suspect that is where the problem is. Bypass the control putting full voltage on the motor an see if it runs. If it does, then speed control has a problem.

Jan 27, 2010 | Dremel 1800-01 Scroll Station 18" Variable...

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My 12v dewalt drill runs like its running low on power even with a fresh battery in it.help!


Hello,

The problem I have seen is the trigger. I know it's a pain, but that was the the problem with mine......The trigger has an integrated regulator and Rheostat that controls speed and voltage and when she goes,...........That's it! Sorry.....

Dr. Phil

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2 Answers

Burnt Out Drill?


hi , the bad news is you have almost certainley damged the motor and may have damaged the switch ( it is also the speed controller ) , the good news is because its a Makita then you will have little trouble in getting spares for it , if you repost the actual model and what country your in and ask for a spares diagram/parts list i will help further

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2 Answers

Powa Force drill charger is dead


Powaforce battery charger.

  1. Measure the dc output (with multimeter) on female plug. Should read ±16 – 20V DC. If no voltage here open charger and measure 220v AC on input wire before transformer. No voltage faulty input cable or 3pin plug. If ok check for dc voltage after transformer. If transformer faulty (not worth repairing) replace with same dc volts and amp (important)output. Check now output cable.
  2. If voltage is on cable but base does not light up, probable faulty capacitor. If light is on but does not charge, probable rectifier that gives too little amps.
  3. Any good tv repair technician can help you. My tv tech already fix about 9 of my torch and drill chargers. Parts usually about R5 – R10.
ps. email me the specs of your charger the input, output, the current (MA) and the voltage 14.v or 21v to globalsat1@gmail.com

Dec 04, 2009 | Drills & Drill/Drivers

1 Answer

Hilti te92 starts up then stops after a little use


It could be the contacts on the switch are burning out. The 92 also had an electronic speed regulator that could be going out.

After you run the drill and it stops. Unplug the drill, take the handle off and apart. Feel the screws on the switch were the wires are connected. If one of them is hot to the touch that usually means the contacts are burning up.

Oct 06, 2009 | Hilti 3431126 SF 144-A CPC Drill/Driver

1 Answer

Part # of the Voltage Regulator in Dewalt Drill


The part number for the switch is 152274-19 . Dewalt doesn't sell the individual parts for the trigger assembly. It really depends on the manufacturer of the trigger at the time of production. You should be able to locate a company name on the side of the trigger switch assembly. It may be Marquardt. I am unaware of any way to order individual parts for these type switches. If you find a source please post.

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1 Answer

Dremel Scrollstation 1800 motor fault


There seems be problems with the electrical systems of the Dremel 1800 scroll stations (had same problem)
Speedcontroller burns out and DC motor gets hit by Main AC voltage.
Earth leakige due to low resistance between DC motor Rotor and earth (flowing current to earth)
Measure rotor copper connections to earth to check for low resistance, should be very high.
Biggest problem is that the main metal body under full main voltage comes and this is a dangerous situation!!!!!!!

All to fix is to repalce (both) fauly parts,
Motor Controller and DC motor

Hope this helps

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