Hi Jerry, over the years I have replaced many TVs. The brand/kind makes almost no difference when making the switch. My first thought is the new TV must fit in the area and existing mounts. TVs of that era in high end coaches were plasma. Today a good quality LED is a good fit, light weight with a good picture and good price.
Generally speaking, any connections on your old TV will be on your new one. Your new TV may also have more modern connections such as a high definition interface connectors mm (HDMI).
When it comes to installing HD satellite, OTA TV, DVR and other systems into a coach your not remotely familiar with, would be impossible to direct a person with no A/V experience.
That said, if you just want to swap out the front TV, it's just a matter of pulling the cables out of the old TV and plugging them in to the new one.
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