Microwave Dometic DOTR 12CB in 2004 Dutch Star - Solved
Thanks, Old Biscuit. Took yours and others advice and put water in a microwave safe cup and put it in microwave. It worked perfectly. It kept eating at me that it was the new microwave-only bowl that caused the erratic behavior and glad I found out. There must have been something in the plastic bowl that was supposed to stay cool while heating the food inside that acted like metal as that it how it acted. I called the company and reported it but, of course, they denied it was their product and said they tried the same bowl and it caused no problem in their microwave. I threw away the bowls but kept the plates as I want someone to examine them who could tell if the material is not compatible in older microwaves. I think the manufacturer was Cooks but when I looked on their website, the bowls and plates were not listed, only cookware. I will check the manufacturer name and let you all know. All of the cool to touch bowls I found since this have been dual bowls with a removable ceramic bowl inside and plastic outer cover. These look just like plastic bowls. Just wanted to let you know I took your advice and was careful with hand on the stop button, fire extinguisher handy and ready to pull the power. I will always watch it carefully, just in case.