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I have a Sharp Carousel microwave model R438DV 1200 watts. There is a small 5x7 screen on the right side wall. It now has a small hole and has char marks on it. When I use the unit a fire starts o

I have a Sharp Carousel microwave model R438DV 1200 watts. There is a small 5x7 screen on the right side wall. It now has a small hole and has char marks on it. When I use the unit a fire starts on the screen. What can be done to repair this. The unit is about 9 years old. Thak you. Paul

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You have to replace that small screen which is called wave guide. If there is a sharp authorised service centre near to your place you can buy the part from them. Do not work the oven without replacing that part.

Posted on May 30, 2009

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Posted on Jan 02, 2017

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