Another problem to check for that is not the fridge won't get cold, but the freezer will, is the 12V power. If the converter is damaged, it can appear normal, but the fridge temperature will be 50F or above and the freezer will be frozen. If the 12V measures 16.79V, the converter is toast. Your LED lights will appear normal, the fridge will not have an error code, but you just will not think of measuring the 12V.
Progressive Industries will tell you that the damage to the converter is do to water. Even though the service bay is bone dry and there isn't any sign of water being present on the dry plywood. Don't ask me how I know, but I now have one new converter and a spare rebuilt one. I will be installing a voltage and current monitor on the output of the converter in six or seven week after our next four week trip.