I was warming up food and the microwave made a sound like a power surge, crackle them stopped working. All power is gone. No clock, no light. Which part do you think needs replaced?
Answer Hello Crystal. Check the fuse and if bad, make sure the door switches are good. If so, 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.
after closing door ..setting cook time..pressing start..hear a clicking sound instead of a cooking power humm sound...plse help..thx
Answer Bruce, If it's definitely a "clicking" noise, the transformer and High side(voltage) components are the least likeliest culprit. A clicking noise would be an indication of a relay failure or loose connection on the control board 8206448 or harness. If the noise is a "crackling" or arcing noise, then we need to look at the High voltage components and wires. Good Luck and Thanks
Microwave had a fairly loud pop then went dead. No Clock or light or anything.
Answer Hello Jack. You will need to remove the outer cover off the microwave and test the fuse W10138793 and see if it is bad. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html