Todd for Model Number Kemc308kss0 Microwave is working but stopped heating and smelled like rubber, Is this typically the Magnetron? Is there a strong possibility of something else you may suggest? I am handy and can take the unit out of the wall to do repairs, however for this repair would you recommend a tech or a relatively simple repair? I know that is a hard question not knowing me, but I will try anything once unless I need a specialty person. Thanks for any help you can give me. Todd
Answer Hello Todd. You most likely have a "high voltage" side malfunction. Transformer, diode, magnetron, Capacitor. You will need to be extremely careful if you decide to test the components with a multi meter, Very high residual voltage is present, so make sure you remove power to the microwave and short across the terminals on the capacitor. The magnetron should have a reading of less than 1 ohm resistance across the two terminals, and an "open" circuit between each terminal and chassis ground. The diode/rectifier should have a resistance reading in one direction only, no resistance, or resistance in both directions indicate a faulty diode. The primary winding on the trans former should read approximately 450 Ohms resistance, the secondary winding should read 80 ohms resistance, and the filament transformer should read 100 ohms resistance. If all the readings are proper and in range, replace the magnetron. Read More... Answered by AppliancePartsPros.com | Thursday, January 30, 2014