There are still power routing turnouts. Especially in a grey brand, that looks like Bmann track. Google your turnout to see it it is routing. To your question if there is no power, at the track, you will need to hunt it down, with a DC volt meter. If you have voltage, at the end of the feeder, that you can still touch, but not at the track, it's cut off somewhere. I think, if it were shorted (the 2 lines touching) you would overload the supply. Ballast or an unfortunate missed connection is my guess. Does the reading change, if the switch is thrown vs straight. Did it work, before you ballasted? A picture marking where the feeders are, and the track brand will help. You might just need to solder in a feeder.