Question about Microwave Ovens
If the microwave gives no sign of life, test the oven on a different socket and check the thermal fuse, usually located at the back of the appliance.
If the microwave does not start, check the door switch.
If it is working but not heating, then test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.If turntable is not running check also the door switch.
Faulty power diode, high-voltage capacitor, or magnetron often make a loud humming noise when faulty.
The diode and capacitors can be tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, evenif power is off.Capacitors can get discharged by shorting their two contacts.
Before replacing the magnetron test also the control board.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.
All locations, and description of this parts can be located using the diagram here: Counter top.
Parts must be tested to find out what is wrong.
Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.
Regarding parts, contact the seller here to purchase parts.
Posted on May 27, 2009
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Posted on Jan 02, 2017
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