Question about Emerson MW8102SS 1100 Watts Microwave Oven

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Loud noise and not heating up

I turn it on and it started to make a loud noise and not heating up

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If its making a loud humming noise you need to remove the outer and carefully discharge the high-voltage capacitor in the magnetron circuitry(caps are usually oval in shape and 3 to 5 inches long) after this disconnect one terminal of the cap and check it for being open,then do the same on the high-voltage diode and check this for front to back resistance high in one direction and lower with the meters leads reversed on the diode,the humming is coming from the transformer not being loaded by the cap and diode to double the voltage required by the magnetron tube of -2,000 volts D.C.

Posted on Apr 26, 2010

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Could you describe the noise?

It may be a noisy fan motor or a failing magnetron or high-voltage transformer.

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You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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