[rohrmann]

First step is, check for power on both legs at the pedestal you are plugged into. Then, check for power at the trailer end of your shore cord with the cable plugged into the pedestal but disconnected from the trailer--BE VERY CAREFUL DOING THIS--but, because the terminals in the trailer end of the cord are protected, you should be OK. If you have power there, then turn off the pedestal breaker, re-attach your cable to the trailer. Before turning on the pedestal breaker, remove the panel cover inside the trailer so you can see the terminals of the breakers. Again, with the breaker at the panel still off, tighten all the terminal screws on all the breakers. Then, turn on the pedestal breaker and check for power at all the breakers, especially on both legs at the 50 amp breaker. Hopefully, by now you have found the place where you don't have power. If not, then you have an issue with the main GFI outlet on the run you had no power at. You need a volt meter to do all these checks, and it doesn't have to be fancy or expensive. Just be careful.