Hi,we have a 2019 Big Horn 3950 FL. Last weekend the microwave tripped the breaker I was able to reset but it did it again and then it couldn't be reset. I bought a new breaker and my husband replaced it and it worked for about 3 uses of the microwave. Then it tripped again and again can't be reset. Any advice of what we can check is appreciated. The breaker has 15amp/20amp. The 20amp is the one that trips