The following is the field unit from a DeWalt 402 angle grinder:
You will notice on the right side 2 connecting points. There is continuity between those connections.
On the left, there is one connector and one open slot. I'm assuming the slot is for a grounding spade from the switch assembly. There is no continuity between the connector and slot, nor is there continuity between the connector and field core itself. I do,however, get continuity from the connector to the blob of solder on the field winding (previous repair). This leaves me with some questions:
1. Is one of the field windings normally connected (grounded?) to the field core
2. If not, does continuity then depend on a different ground
3. Were I to make a connection from the solder on the field winding directly to the field core, would this
repair the field and allow SAFE operation of the tool?
4. If not, may I assume the field is no longer repairable and should be replaced
I hate to toss a possibly repairable tool, but I don't want my ignorance to compromise my safety.
Add'l info: There are 2 line connections and 2 brush connections to the above field unit.