DVD turns off w switch turned on
I have a Surveyor TT that I keep plugged in 30 amp. My kids and I camp every Fri night in our camper in our shed. Recently, my DVD player has been turning off when I turn on any light in the camper. It will come back on but then sometimes the DVD blinks on and off. I checked my battery check monitor and it says the battery is empty. I don't know that I have ever checked it the monitor with the camper plugged in, so I don't know if this is normal.