I’m at my boat, with shore power connected and both gauges looking good, but I have no power to anything on the boat… No bilge pumps, no freshwater pump, no navigation or cabin lights, etc. The only thing that works is the fridge, because that’s on a converter. Where do I begin looking and for what? Someone at the marina suggested maybe a faulty transfer relay…? We’ve gone through the manuals and can’t seem to find a clue. The circuit diagrams seem to show two individual transfer relays (two circuits) prior to the main breaker. But these diagrams also include a generator output, and I have no generator.