Need Help for Model Number JVM1870SK03 Fuse/s blow. All 3 door switches ok, Magnetron measures 1.6 ohms, Capacitor checks ok, and diode checks ok with 9V battery test. Thermostat sensors are ok. Before the fuses blow, the lights and panel work ok, the fan goes on, and table turns, then then fuse/s blow after about 10 seconds. Fuses are Buss 20Amp. No loose wires. This is an over-the-range GE Spacemaker XL1800. Unit built 2006. Initially, it ran but no heat, now fuses blow. Thanks for reading this.
Answer Hello NH, based on the symptom and the checks already performed it seems the oven is drawing too much power when heating, this would indicate a problem in the high voltage section. most likely it is the magnetron, which likely has an internal short occurring when it is powered with high voltage. The magnetron is part WB27X10880. Read More... Answered by AppliancePartsPros.com | Tuesday, October 27, 2020