Still looking for 12v power.
 

As per previous post i am still wondering why i have no 12v power when not connected to power source.new 27 series battery,does not have 3 way switch by lift ring.u ftftp and down only.Works only with converter.1992 fun lt 25 ft.

Start by checking for a fuse around your battery area. Some are self resetting others you have to reset.

Going back to your original post, what all things did you test that were recommended?

Did you get it fixed? I had accidentally pulled the breakaway switch and it drained the battery and popped a breaker near my 12V fuse panel. It was in a spot almost invisible underneath the converter, I reset it and had power. I also rotated it 90 degrees to make it visible.