I set the timer to 3 min power level 2 to defrost meat. After about 5 minutes I went to check and the meat was beginning to cook and the magnatron was still on and the turn table was stopped. Opened the door and the mag stopped. Closed the door and the mag started up again. Put some time on the timers and turntable started. Time expired and mag still on. No response to control board. Unplugged unit for about 5 minutes and everything is now ok. In the two years since we lived in this house, this is the second time this has occurred.
GE Spacemaker JNM1851SM1SS Seven years old