I have a Whirlpool Estate dryer, model # TEDS780-JQ0. In the middle of a drying cycle, just stop running. The interior light still lights up and I can still hear the timer clicking, Can a defective push to start switch cause a dryer stopping in the middle of a cycle?
The push to start switch would not cause a dryer to stop mid cycle. The most likely cause would be the motor overheating in which you will want to check the seals on the dryer drum and blower housing to make sure that they are not damaged. If so then they will need to be replaced. If the seals check ok and you can let it cool and it will restart then the motor would be the issue with the unit.