Dryer has power but will not run
About a year ago my dryer breaker started to catch fire. We caught it before any damage was done. At that time we replaced the dryer and the breaker. Since that time I have gone through 2 dryers. Each will only work intermittently. There is power to the machine but when the start button is pressed it will not always run. My current machine is 1 week old. We have replaced all wires between the breaker and the dryer and have 120/240 volts with a voltmeter. I am at a loss for what to do next.