Set the timer for 2:55, not using the popcorn setting. The microwave stops dead, no display and comes back to life after about 10 minutes. Second microwave of same make and model both brand new. I installed exactly the same microwave in my last house, back in May, and popped the same brand and package size of popcorn with out problems. My theory is the steam from the pop corn is for some reason tripping a thermal cut out switch.
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