Whirlpool microwave WMH31017FS0 Installed previously diagnosed parts. Unit still not heating. Checked transformer supply voltage, 122.5 VAC. Checked HV transformer windings, in spec. Checked HV capacitor, and HV diode. Diode has closed circuit in both directions. Called WP TechLine to confirm. Need to order HV diode, W10886077, for return visit. ; ordrng 1 11111 (MICROWAVE LIFT) and 1 W10886077 (diode), schdld next appmnt for 5/1 TUE