Customer Questions and Answers for Microwave Fuse by Ge

Becky, This issue could be caused by a bad diode, transformer, capacitor or magnetron. You would want to test these parts using a multimeter on ohms setting. The resistance of the magnetron should be less than 1 ohm of resistance. The capacitor you would need to put a lead on either side of the capacitor and the resistance should jump up then fall to 0.