Question about Makita 7 1/4" Circular Saw 5007NB

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My Electric saw works intermittently

My saw works fine then stops working. I checked power outlet and fuses and they are working fine, what can be the problem?

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Could be it's overheating. Clean out all sawdust from the vents on th e motor body, and wherever else you find sawdust. Check that you're using a sharp blade. Check all wiring connections are secure. You maay need to remove the cover behind the on off switch to check thatb all the push on connectors are pushed on tight.

Posted on Jan 22, 2013

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Posted on Jan 02, 2017

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1 Answer

Skill saw table saw model 3400.Bypassed on off switch still no power?Does motor have a breaker on inside?


I have the same saw.

Sorry but this question has to be asked, is the AC (Alternating Current) outlet working/ an live outlet? Had to ask.

If outlet is good move on to the next steps.

Take an ohm meter / continuity meter.

With the AC power cord unplugged from the AC wall outlet.

Place the two test leads from the meter onto the plug prongs .

With the switched closed/ON, you should get zero ohms (or very low, close to zero/ continuity).

In your case you probably will not have any continuity because it doesn't turn on.

Now comes the fun part trying to find the problem/ open connection.

Lots of possibilities.

  1. The AC cord could be bad at the plug end.

  2. The AC cord could be bad at the point entering the table saw.

  3. The motor could be bad.

  4. The brushes in the motor could be bad.

  5. The field winding in the motor could be open/bad.

The plan is to ohm/continuity check the path of the power going to the motor, (both sides of wiring).

While meter leads are on the AC plug end, wiggle the strain relief ends. You have an intermittent connection.


TROUBLE: SAW WILL NOT START

PROBLEM 1. Power cord is not plugged in.

2. Fuse or circuit breaker tripped.

3. Cord damaged.

4. Burned out switch.

REMEDY 1. Plug saw in.

2. Replace fuse or reset tripped circuit breaker.

3. Have cord replaced by an Authorized Skil Service Center or Service Station.

4. Have switch replaced by an Authorized Skil Service Center or Service Station.

May 25, 2016 | Saws

1 Answer

I was cutting a plywood and pulled the saw back through the cut, before the blade came to a complete stop. Now it will not turn on. Is there a reset switch or a failsafe that tripped when I did that?


Good afternoon Rebecca.

Some of the answer will depend on your make/model. Saws will generally have some failsafes inside to keep them from getting damaged, but lets start with what you have. You say you pulled the blade back through the cut before the blade came to a stop. That was probably OK - you generally don't want to stop the saw in the middle of material since it might pinch or jam against incoming wood.

If there is not motion, the foremost question is whether it's a saw problem or a power problem. To that end (please be careful here - unexpected saw starts can hurt you very badly)
  1. With the saw unplugged, can you move the blade at all? There may be a fair amount of resistance through the worm gear to the motor, but it should move. If it's totally jammed, you may want to try removing the blade and checking for debris jammed in the saw
  2. If the saw is plugged into another outlet that you know has power, will it turn on? If not, focus on the saw, if it works, focus first on the outlet.
  3. Is there power to the outlet? Plug something else that you know works into the outlet and see if it will turn on. If not... check if it's a GFI outlet and try resetting the breaker buton in the middle of the outlet. Then check the breaker panel that serves that plug and see if a breaker tripped. this could be particularly possible if it's a 15 amp circuit and you were, say, cutting a heavy thickness of plywood. Try re-setting the breaker then and see if the outlet turns back to life.
Some saws may have an overheat breaker, which will require you to just let the saw cool for a while. others may have a fuse, but the location will depend on the particulars of the model.

Hoping this helps.
Good Luck!
D

Nov 23, 2015 | Saws

1 Answer

How to check the electric brake on a dewalt 706 type 1 chop saw


The power cord can get a break in it. Try moving it when this happens. Otherwise, the plug can fall out of the outlet. Sometimes the switch goes bad.

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2 Answers

Using the saw working fine. Turned it off and came back out to use it and it will not work.


check to make sure that the tool didn't trip the circuit breaker --- make sure that you have voltage to the outlet.

c...

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There is a thermal fuse in series with the heating coils inside. You will have to disassemble it, find the fuse, take it to an electric supply house and get a replacement. Some soldering "may" be necessary.

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Saw just stop working doesn't come on check switch looks good. have move then one saw and 2 have just stop running after a while of cutting. Neither where over heated. I have 3 saws 16" 14" and pole is the...


You need an AC voltmeter to check things--measure across the switch contacts (switch off) for ~120 volts. Have someone press the switch while reading voltage--it should go to 0 volts (switch is good). Check for 120 volts at the motor connections (switch pressed--good). Check the motor brushes for damage or worn too short. The springs should appear bright brass colored and expand full length. If dark colored and collapsed, the springs need to be replaced. If no power from the power cord, look for a broken wire--usually at the plug end. A high load on the motor can cause the brush springs to overheat and collapse. Make sure the chain moves easily and is properly oiled. Make sure the air venting for the motor is not plugged with sawdust. Hope some of this helps!

Mar 07, 2010 | Remington 16" Electric Chain Saw

1 Answer

Makita Ls1212 works intermittently


Check the power cable. They could be broken or frayed and you are not getting enough power to it replace and then try to see if it works then. Make sure you buy the right size gauge for you machine

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Dewalt miter saw 12"


no fuse, you can checked the brush holder assy by poping the assy out & checked the bronze terminal if broken.if the holder are ok. check for continuity of the field coil main ac coil & brake coil, main are bigger wire the brake are smaller wire.

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1 Answer

Kenmore Electric Dryer


forgive me for stating the obvious, but you didn't say, have you checked the outlet for power coming in?

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