Question about Microwave Ovens
Check connection to the top element and test the element using a multimeter.
Baking and broiling elements use the same temperature sensor. If you wired the new sensor correctly, the problem may be the element itself.
The element is tested setting the multimeter on Ohms, at Rx1, disconnecting the broiling (top) element , and reading impedance on the element terminals.
If the element returns no continuity (infinite impedance), then the element must be replaced.
If the element is ok, test the wiring harness. This is more difficult to test using impedance because you need to know where the harness to grill is connected to the OEC (electronic control board). The techs usally test the timer board reading volts. Testing with live power is not suitable for home user. As from manufacturer indications I suggest performing only tests that can be done with power off.
Test the top element, the wiring harness, then eventually the control board and replace the faulty part.
Parts can be ordered calling the number on manual. Diagrams for most makes and models can be found using the websites listed on the link below:
Where do I find parts and diagrams?
Posted on Apr 30, 2010
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Posted on Jan 02, 2017
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