help electrical

[Montana_4359]

I went to winterize the trailer 3295 Montana and I connected the electrical to the house then went in to pop out the slideouts. The bedroom slideout went okay and then the two main slideouts started to go out an they stopped and then the lights blinked twice(I think) and the lights on the cieling went out and it appears that all the dc is out even thought the electrical is on. The fan and light in the fan, tv, fireplace and microwave all work. But the pump to winterize does not work and all the ceiling lites do not work. what should I do at this point

[H. John Kohl]

You have lost your 12 volt source. Either a breaker has poped on the 12 volt side or the converter has poped a 12 volt fuse. Look at the little auto fuses beside your circuit breakers. The items that are still running work off house 120 voltage. If the fuses on the inverter are ok then look up by your battery there may be a breaker up there to reset.
Good luck and hopefully someone else can give you more detailed guidance.