Question about Emerson Microwave Ovens

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When i use my oven there is an arc from the door to the body in about 7 different spots. sometimes it is enough to weld the door shut. What can i do it is only about two years old.

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The basis of the claim "you cannot put anything made of metal in a microwave" is based on the fact that metal:
a) reflects microwaves;
b) it will acquired a electrical charge that can arch to the grounded chassis.

Somehow, your door is no longer grounded to the chassis and so, gets a charge that arches to the chassis. Check the door for conductivity to the chassis and ground to the chassis any part of it that is currently insulated.

Posted on Mar 11, 2009

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Check inside the oven chamber and look for missing powder paint or signs of arcing, if so dispose of the microwave. If the inside is good remove all the screws and remove the cover. If the magnetron was making louder noises prior then replace the magnetron. the giant capacitor could be bad. While the cabinet is open make sure to look for burned wires, check the continuity of thermal cutoffs, and check the main circuit-board for burned traces or components. The relays in most electronics are known for arcing (spot welding) and staying in the wrong position. Tap them hard with the back end of a screwdriver. During all of this use safe electrical practices by having the power cord unplugged. The capacitor could still have a high charge on it so be careful.

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Did you search this site for this problem? I have posted a answer to this site several times.

My response is please check the door safety interlock switches. These switches fail because we (count me in the number) open the door while the oven is running. Eventually, they arc enough and fail. When they fail, the oven doesn't know the door is shut and will not turn on the magnatron. Forget what you know about the door. The oven needs to know.

Thanks for your interest in FixYa.com

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Check the door safety interlock switches ...

Remove the cover and find the switches opposite the hinges. Check with a contunity meter.

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If the cavity metal of the oven is cracked or split, you can use a small amount of steel-based epoxy such as JB-WELD to patch the crack or hole.

Once that dries thoroughly, you can sand it very smooth.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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