If you try to heat a small item like cup of water, it just ramdomly stops. Some times it reset the clock. If you hit start again it runs for awhile than stops. But if you put 2 cups in it runs fine. It just started doing this. It only stops with small items now?

Microwave Ovens - GE - SpaceMaker - Spacemaker JVM1640SJ Microwave Oven