GE microwave oven blows its main time delay inline fuse everytime i put new one in
Blown fuses are from power surges in all cases. You need to find out where in the circuit it is. Start with the breaker box and work to the appliance.
It's faulty. Get it repaired or just buy a new one.
When does the fuse blow? A soon as you plug it in to the wall outlet, or when you press the Start button, or when you open the door, or ? If as soon as you plug it in or when you open the door, it's probably one of the door interlock switches. There are at least two door interlock switches (often three), one of which is called the interlock monitor that shorts out the main lines and blows the fuse in the event the other door interlock switch fails in the closed state. You would need to find the faulty switch and replace it, usually not a difficult task, but a task only for those who know basic electrical circuitry troubleshooting and repair. If the fuse blows upon pressing the Start button, the fault is one of the HV components (magnetron, transformer, capacitor, diode) causing a short circuit. It could be any one of them, and narrowing it down to the actual fault also requires some basic knowledge and experience with HV circuits, as well as the proper test equipment. In any case, if you've never done this sort of thing before, best to either have the appliance serviced by a professional or round-file it and buy a new one.
