The mastercraft hand router has been broken (not turning on) for a while now so I thought I’d take a look as it is probably our most useful router and has the router table too.
I got a good bit of diagnostics done but could probably use a bit of input on the next steps.
Here’s what I did (not plugged in obviously):
Checked the power cord for continuity using a multimeter and undoing the wires from the switch. - FINE
Checked the switch for continuity using a multimeter. - There seems to be a short on one of the switch connections.
Checked the router for continuity (again with a multimeter) - There was no current so I had to look a bit further.
Opened the top of the casing and tested all the wire connections for continuity. FINE
Isolated the problem to the speed control board. There only seemed to be current at speed 7, so there is a problem there but it should at least work at 1 speed. Reassembled and had continuity throughout the router.
The brushes are in a pretty bad way but don’t seem to be the cause of the issue.
So I guess the question is, would it be worth getting a replacement switch (pics below) and where on earth do you get one of those?
(also whoever took it apart previously, forgot to put back some of the screws and the depth setter)