Your longer floorplan may vary from our Ventura IV, but likely not much.
30amp (Inverter) box breaker 6 runs to a junction box under/behind the fridge that exudes 2 outbound sub circuits. One goes to a second Jbox in the dinette slide (streetside front), then to the dinette outlet and any optional table outlet forward of there, and finally to any switch to an optional sconce light on the slide wall.
The second outbound sub circuit runs to the fridge ice maker outlet behind the fridge (remember that the ice maker part of the fridge can feed off the inverter, but the fridge/freezer itself cannot and instead plugs into its own outlet on a 50 amp Main breaker circuit, 6a; this prevents the fridge from running down batteries while dry camping, making it revert to propane). From the ice maker outlet the sub circuit runs forward to the front cap and two A/V outlets plus one for the TV.
Your short could be anywhere mentioned. If you have a plastic Belkin power strip buried in the front cap’s snake pit of wires feeding A/V, it has been known to be a hazard, overheating, melting, and is a fire danger as reported by at least one member or former member here. Check it. Replace it with a metal-cased power strip that better contains any internal burning.
As Mike notes, be sure the built-in GFCI in your 30amp #6 breaker is okay, although I’ve never had problems with that type like I have with ones in outlets. There are good quality GFCI’s that aren’t over sensitive, and then there are poor quality ones that incessantly trip.
The ice maker outlet box may contain the 12 volt device that locks out the TV and A/V sub circuit when the coach ignition is turned on.
By the way, the dinette overhead lights are not 120v, but rather part of the 12v Multiplex system, probably Module B, bar J1 port 4 like mine.
Joel