Ralph May 20, 2016 for Model Number gh44184xsb-1 When replacing the magatron how do you discharge the capacitor before replacing the part?
Daniel July 13, 2015 for Model Number MH3184XPS3 I have a microwave oven that makes a continuing noise even after the power is turned off overnight. I do not think it is the normal magnetron humming noise. Do you think that the magnetron needs replacement? The oven is 9 years old.
1 Answer Hello Daniel. Check and see if the fan is running. If so, you may need to replace the control board in the unit, if the door switches are good. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More...
1 Answer Hello Daniel. If the unit is making a noise and not heating, 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 transformer should read approximately 450 Ohms resistance, the secondary winding should read 80 ohms resistance, and the filament transformer should read 100 ohms resistance. All of these are +- 10%. If all the readings are proper and in range, replace the magnetron. Read More...
John June 15, 2014 for Model Number GH4184XSS-1 I have received a magnetron for my non-functioning microwave oven. I cannot tell from the diagram where it goes! Can you help me?
1 Answer John, To access the magnetron, you will need to pull the microwave down from the installation and remove the cabinet of the microwave. Once the cabinet is removed the magnetron will be on the right side of the cavity. Make sure that you discharge the capacitor before doing any repair on the unit. Read More...
Ken May 20, 2014 for Model Number mmv5208w-1 I bought this microwave manufactured on aug 10th 2010. I installed it and now in may of 2014 it wont heat. It just hums and the table moves around. What is wrong and should not this microwave last more than4 years? I am not happy.
1 Answer Hello Ken. 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...