You didn't mention if the TVs have ststic or no picture at all. If no picture at all, the problem may be with theTVs. On my Concord, the antenna amplifier switch is in the cabinet beside the front TV above the passenger seat.
Have you checked with your insurance company? This is covered under comprehensive. If you have a low deductible, have them handle it. I would at least get an estimate from a RV repair shop and weigh the options.