[MikeViking]

Well, somewhat successful.

The meter is open. The coils looked intact and while the whole thing looked a little dusty, it wasn’t bad.

What I did find is that this may simply be a bad solder joint.

The meter connects to the outside world via the large bolts on the back. Internally they connect to some tags/lugs with a wire soldered to them. That wire then runs to a coil. Looks like a bobbin. The connection from outside screw to coil is fine. You can see the coil hanging around in the bottom of the attached picture.

The coil is terminated on the plastic bobbin. Another wire then runs up to the meter. That’s where I have flaky continuity.

So, bolt to coil at red circle is ok. Red to green through the coil is ok. Green joint via wire to to blue is intermittent. It really looks like that green joint has fatigue and become intermittent. See the attached pic.

Given the size of the wire in the coil/bobbin, I am really scared of putting a soldering iron near it. Not a lot of room to work with. Stripping that wire to reveal something to solder onto makes me nervous.