Since you said: "Fried the coffee pot, fan, blender. TV was smoking but seems to work," this smells suspiciously like a neutral problem. If your RV or the place you are getting power from has a bad connection in the neutral circuit, the voltage can jump from 120 to 240 and will fry any 120 volt items that are on the line. That's why you want one of these: EMS-HW50C
If you are still plugged into the same location, I would do some serious investigation before anything else is fried. If at an RV campground, ask maintenance to check the receptacle and connections. You should also disconnect from the power source and check all of your connections. These RVs experience a lot of vibration as they travel down the road and connections can and will loosen over time.
I'm wondering from his initial post if this isn't a 30 ampere/single phase service. No neutral would mean his original thought of "surge" may be correct?