Power

[Brightsu]

I need to poll the panel on this one, our camper hasn't been used this year, we kept it parked in a storage field. we brought it home to clean up , use a couple of times before winter and get it ready for winter. Heres the rest of the story we got all the recaulking done cleaned exterior, looking good. We opened it up and to our surprise the light over the couch had filled with rusty water, so we began cleaning inside, opened up bathroom, took battery out to charge, plugged in shore power and the only thing that would come on was power to microwave, convertor no sound, nothing works except clock on microwave flashes. I thought I heard a small beep out of that unit on floor next to bathroom. Any suggestions, any help will be appreciated. I did see small indications of a mouse, can't find any wiring chewed into or anything, my husband is out there now with his power checker to see if the power is going to convertor. Ok there is power to the convertor and to the GFI, the GFI will not come on, I'm sure I heard it put out a small beep.

Pam