Checking in... Once again, thanks to everyone for all of your input. Doug, I had already done the things that you suggested and to no avail. Today I called a couple of electrical companies who advertised solar, but none had any experience with a rig like this. So I called our trusty mobile RV service guy and he came out this afternoon.
If you're ever up in the Poconos or Lehigh Valley area and need help I highly recommend Luke's Mobile RV service. Anyway, as to the converter I didn't have one and I knew that. It had been replaced by a Xantrex 3000 inverter. Luke traced the trouble to the inverter. We had a power outage a few days ago for about an hour and a half. Apparently when the power came back on the inverter took a spike. The problem just took a while to manifest itself because the solar panels were still sending some charge to the batteries, but with cloudier days and colder weather the solar couldn't keep the batteries up and of course the shore power wasn't getting through the inverter to the batteries. I think I understand this to be the problem. Anyway, my inverter has been replaced with a converter and all is back working once again. Luke explained that unless I intended to do a lot of dry camping a converter was much, MUCH cheaper than a $4000 inverter. I readily agreed, since I won't be doing dry camping now, without Don.
Anyway, this was the ending to the saga. Oh, and with one space heater running in the bedroom last night, I awoke to 47 degrees. I sure as heck didn't want to climb out of my sleeping bag. And I was glad that I opted for a sleeping bag to hold in body heat. So Scarlett was right... Tomorrow is another day, and it turned out to be a better day!