On Friday, September 16, 2016 at 2:28:51 PM UTC-5, rlyoung wrote:
Whirlpool WMC50522AW

-Oven heats weakly--won't boil a cup of water on high after 5 minutes
-Draws only 300 watts on high (rated 1200 watts)
-Measures -10KV DC to case at Magnetron terminals on high (10 to 1 high-voltage divider measures 1KV on voltmeter)
-diode and capacitor appear to pass simple out of circuit tests
-magnetron did actually pass simple resistance tests

Looks like the magnetron is faulty?
Magnetron PN: 2M248J (no suffix)
Thanks. My first post here.

Have you searched YouTube for any videos on that model of microwave oven repair? There are a lot of sites that may have specific information on your oven. (€¢€¿€¢)

http://www.the-appliance-clinic.com/

http://www.repairclinic.com/

http://www.appliancepartspros.com/

[8~{} Uncle Micro Monster