Question about Black & Decker Saws
I am looking for a Trigger Switch for my B-D 7390 Type 4 circular saw.
Part number 380779-00
The few websites I have found say the trigger is discontinued… I can’t believe this trigger switch doesn’t exist somewhere!
Any help would be great!
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Posted on Jan 02, 2017
It is probably something like a 6365 and on all the Milwaukee products they have a switch wiring diagram but nothing for the switch. I would recommend going to a local repair center with the switch and match it up with a new one probably less than 15.00 If you give me your location with zip code I can direct you to the closest one. Let me know
Posted on Apr 14, 2009
The Switching should go like this
(single letters denote wire color)
The contacts where the black wires attach are the points on the switch that break when continuity is checked.
Posted on Apr 18, 2009
Contact Ryobi via their website and ask for details of a supplier near you. Ryobi are very good with parts for older models.
Posted on Jul 07, 2009
SOURCE: dewalt saw does not work
You more than likely have a break in the field. In order to test this you will have to take the field out of the motor. There will be 4 terminals on one end of the field. Test between 2 terminals of one side of the field. You should have continuity. Then test the other side. (By side I mean the windings will be seperated one on each side.) The most common problem with these saws is that the field wire at the terminal comes loose from overheating. You may be able to scratch the wire up a little (because it has epoxy on it) and then solder it back to the terminal. (Originally the wire is pressed into a slot in the terminal, but this will be broken, so you will have to solder it for it to make contact and stay) It will save you some money from having to buy a new field. Eventually though you will have to replace the field and make sure that there isn't a running short between the field and armature that caused the overheating in the first place.
Posted on Oct 13, 2009
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