First I would download a copy of your owners manual.
https://www.holidayrambler.com/owner.../owner-manuals
Monaco took great care in preparing the owners manual and they are much better than the typical automobile manual. Section 6 covers your electrical system.
I see on page 71 that you have a 7.5 amp TV relay cutout fuse. I'd start my trouble shooting there.
You should understand the intent of the system. The front TV power is disabled when the ignition is on. Also, on most of these coaches the TV outlet power is provided by the inverter system so that you can power the TV from batteries through the inverter. When you have 120v city or generator power, the inverter acts as a pass through.
Did your coach come with an inverter? It may have been an option on the Admiral.
Hope you figure it out.