My microwave stopped heating. Everything works except for the heat. Time, clock and the timer works as though the heat is on. Do I need a fuse?
Answer Hello Alma. 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.
Where is the fuse location?
Answer Hello John. You need to remove the outer cover off the unit to access and replace the fuse on the unit.
What is the location of the fuse?
Answer Hello Kenneth. You will need to remove the outer cover off the unit to access and replace the fuse in the unit. It is on the power board in the back of the compartment.
Won't run, no lights. How do I change fuse in microwave?
Answer Hello Bill. You need to remove the outer cover to replace the fuse. Make sure the door switches are good if the fuse is bad.