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Model 2704. Why doesn't it turn on?
The principle of the series wound brush type motor is fairly straightforward with a field coil set either side of an armature that is mounted in bearings with a commutator and brush gear mounted at one end, the circuit consists of a field coil, the armature and the other field coil connected in series. The air gap between the rotor and stator is small but large enough to allow free rotation even when hot - electrically there should be continuity through the circuit from the start of one field coil to the end of the other though typically the dc resistance will be found to be low but will rise sharply when the armature is spun...
The checking of the wiring, switch and motor circuit is largely intuitive and well within the scope of the handyperson though the proper testing of electronic speed controls or soft starts is beyond most folk, fortunately though, these things are usually in the form of a module that either work or don't and if the remainder of the circuit tests ok it is reasonable to assume the module is defective and it is usually reasonable to bypass such a module to test motor operation before spending cash.
Professional equipment sold in many parts of the world must be fitted with an electric brake designed to stop rotation in one second when switched off - as yet I haven't had to delve into such things.
This design of motor is electrically very noisy and high powered motors are perpetually at the edge of self-destruction and effective suppression is important to prevent electrical interference to receiving equipment and to some extent protect the motor.
Suppression takes on a variety of forms from a through-module containing a variety of chokes and capacitors to discrete components. It isn't unusual for a suppressor module to fail - they often don't age well...
1/3/2021 6:47:34 PM •
on Jan 03, 2021
Makita table saw wont turn on
A failed power supply, broken on/off switch, bad motor overload, broken power cord or failed drive motor can prevent the table saw motor from starting. First, try resetting the overload. If the table saw motor won't start after resetting the overload, then the saw may not be getting power from the electrical outlet.
6/24/2020 10:57:41 AM •
on Jun 24, 2020
Replaced the muffler on my Makita concrete saw and now it wont start.
check to make sure you didn't accidentally plug up the exhaust port, or pull a wire lose. I don't think it can be anything else, IF it was running well before you did anything. How long has it been sitting? old gas can gum up carbs and or injectors. IF it was running and replacing the muffler made it not run, all it can be is a plugged exhaust, or a wire erroneously pulled loose.
10/1/2019 3:12:33 PM •
on Oct 01, 2019
Makita tablesaw 2704 won't start
It could be a multitude of things. It could possibly be the switch is bad. Do you have power at the outlet. Check for a break in the cord. A wire may have come loose anywhere in the saw itself. Did you check the brushes. That's about all I can think of except for a bad motor. You can smell that. Just take a good whiff.
9/16/2019 4:11:04 PM •
on Sep 16, 2019
MAKITA L 1016L LOCKED IN BEVEL POSITION
Refer to instructions that came with saw.
Big hint page 8.
1/23/2019 3:51:42 PM •
on Jan 23, 2019
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