I have a 4203 Milwaukee the magnet light is on but will not magnetize.

The treadmill will not run if you remove the safety magnet. Replace the safety magnet and reset the treadmill. Should start working again.
Thanks.

I’m happy to assist further over the phone at https://www.6ya.com/expert/christopher_722ea729aae6fd07

recheck your wiring and parts installation

RPM magnet which is at the bottom of the electric armature seat is loose and fused in the lower bearing seat of the motor enclosure try to do this with a small screwdriver and make the surface smooth again from the motor housing where small witplastic magnet a very tight space free to rotate, order a new magnet BUT make sure he is glued with a good glue and dried before reassembeld Milwaukee has often into trouble here.
I'm pretty sure that you have a rotary hammer 500 S GOOD LUCK ! position 1236 MAGNETIC DISC (1) 4931426570 by us in Netherlands could be an other number in the states .

Magnetic drills have a safety system built into them so the motor will not run unless the magnet is on and the tool is sitting on between at least 1/8-inch and 1/4-inch steel. If your drill is sitting on enough steel you may have a problem with the sensor system inside the drill. Those problems are usually electronic parts related and, most of the time, they are R&R (Remove & Replace) method is used until you fix the problem.

If I'm not mistaken, these drills use an electromagnet. Start by measuring the current when the magnet is switched on, but not the drill. If you don't have a current meter, just plug the drill plus an incandescent light into a long lightweight extension cord. You should see the light dim a little when you switch on the magnet. If the light doesn't dim, you just aren't getting power to the electromagnet, and it's probably a broken wire or a bad switch. If the tool has it's own fuse, I would think it would be for the drill only, not the electromagnet.

under mtr hood, check at frt roller pulley/mtr dr belt area. should be magnet on pulley,u will see a black read switch next to it on frame-make sure magnet is in pulley,read switch about 1/4 inch away from each other- follow read switch wire to controller make sure its plugged in. Now if none of that worked, with volt meter on DC, check read switch voltage as it passes by magnet( u will need to have the item on very slow speed,or have someone walk on tread without key in console. if no 5volts, bad read switch

could be a couple things, what thickness material are you trying to drill?? Also if the for/rev buttons are jammed this could cause this, check for low voltage, usually when the buzzer does sound the magnet is not energized and it could be a faulty panel that would need replaced. this tool has a limited 5 year warranty. Let me know what you find and I will try and help more

I would try using duct tape to hold down the base.

I haven't worked on one of them in years but I looked at a breakdown and the parts are as I remember. Go to Milwaukeetool.com and under parts/service type in your model number and view the wiring diagram for an operational check procedure. I would first look at the cord and is the base sitting on 1/2 or greater plate steel. If rusted or painted you will loose some of the holding force. Also I don't know what motor you have but some of the larger units require a lot of amps to operate and it is possible that even though you plugged it in direct to wall the circuit wasn't sufficient to operate both units. Last resort call the tech dept. at Milwaukee and see if they have any ideas. That panel is a component part as you know and there were no replacement parts for it. Hope this helps if not let me know and I will do some more checking

hi first try the magnet on a clean flat piece of m/s sheet/plate 2 inches bigger than the magnetic base ,it should be very hard to remove make shure the magnetic base is clean and the beam you are drilling is paint and rust free if possible clean up the beam with a sanding disc try it make shure the cutter is sharp and use coolant a dull /blunt tool will need more force a good tool almost cuts with no effort on the handle if you are drilling upside down or on the side of the beam NOmagi drill will do this without extra support silk090