Ok, since you have already taken the thing apart and are still alive, I guess I'm not liable if I give you a little more info. My safety caveat still stands!

I do actually have a Sharp microwave, and I have had it apart to repair a broken shaft on the rotating table, but it's harder to take apart than my old one. So all the following are from a 1976 Sears Kenmore unit that I keep in the patio. Here is the circuit diagram:

Everything looks normal except the switch just above the transformer labeled 'Interlock Monitor switch'. It appears to be a normally-closed switch, which will guarantee blowing the fuse if the oven is somehow forced to operate with the door open. I couldn't quickly trace the circuit to verify that.

Here is a photo showing most of the dangerous stuff: The ckt diagram indicates 6.1kV on this unit.

At the top left is the overheat switch, which is mounted on the cooling fins of the magnetron. Below that are the two filament/anode connections of the magnetron, and at bottom left is the transformer. At bottom right is the capacitor/resistor/diode assembly. Above that is the cooling fan, with its motor visible between the magnetron and the fan housing.

Here is a detail of the c/r/diode:

The 6MΩ resistor ( the brown-striped cylinder) is intended to discharge the capacitor shortly after power-off, but never trust the resistor! Always discharge the capacitor using a well-insulated tool. The diode is the black rectangular box mounted on the rear wall of the unit, connected between the capacitor and ground. It is labeled HVPR15-4, and since it has a 1981 date code (5 yrs newer than the unit), must be one of those I replaced. If I recall correctly, at least one of the diodes I replaced (in a different oven) was a black cylinder about 0.3" in diameter and around 1.5" long, plus wires.

Be safe and good luck!

Dick