microwave makes load humming noise and has a smell of something electrical shorting out. i took it apart and tuned it on with the cover off and found that the transformmer was arcing and making sparks. i ordered a new transformer from you # WPL815095 and installed it and now when you turn it on it blows out the fuse on the power lead. i tried disconnecting the wires from the transformer to the capacitor and to the magnetron and then start it and the fuse will not blow out. then i hooked up wires to the capacitor but not to the magnetron and the fuse will blow out. i found that if i disconnect the diode on the one capacitor wire from the ground screw that the fuse will not blow out even if i hook up everything but the diode the unit will run but found out it will not heat up anything. i tested the diode and can not get any contiuity through the diode either way. tested the capacitor and there are 3 ohms at first then it will slowly go to 9.66 ohms. checked the magnetron ohm reading across terminals and had .3 ohms and no reading from case to terminals on either capacitor or magnetron. i reinstalled old transformer and is arcs when its on but will not blow out the fuse .
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