RV electrical

I agree you may have a blown fuse or a failed converter.. With the exception of the microwave and SOME air conditioners and the Television nearly everything in an RV needs `12 volts. MOst A/C's (Wall mount T-stats or IR Remote T-controls need 12 volts.. Water heater. fridge, frunace. lights. fans evcen some TV's are all 12 volt. or need 12 volt for control power. No 12 V they shut off.

Also check the 120 volt breakers Look for one marked CONV (If they marked it consider yourself lucky)

And with the rig UNPLUGGED operating by 12 volt and/or flashlight check the wires in the breaker box for loose screws.. Many have 'em.

What is the battery voltage right on the terminals?
What is the DC voltage in the fuse panel?

Dunno.. I've got a 16 year old TT that runs just fine without a battery and just plugged in. When plugged in and no battery, I don't leave the power on 24/7.. Just as I need power to the trailer for whatever I need power for at the time while it's being stored.

My batteries tend to grow legs and walk away if I leave it on the trailer, and it's parked next to my house.. I even have a video camera on it, but since I don't check to see if the battery is there or not every day... Hard to pin point when the legs grew??

Good luck!

Mitch

Maybe a fuse blew in the converter? I would check to see if it's still charging the battery or if you're now running on just the battery.