I have a Thor Teller 2021. I had to have my Winegard replaced and when I went to pick it up we had had a heavy cold snap and they had to jump it to start it. The backup cam and the radio do not work now. There is nothing else that I can find not working. There was one fuse in the back that was dead and I replaced it, but that did not fix the problem. Do you all have suggestions of where I should look to get it going again? Thanks.