Question about Microwave Ovens

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I have an over the stove Jenn air microwave. I was making jam--using all burners on high heat for several hours. We were using the timers on the micro..In the midst of the operation the microwave went dead. At first I hoped that the heat may have triggered a shut off valve...no such luck. It is dead. The repairman came out, took it away, said that it needed a $185 "board." The cost will be over $250 to repair. My question is: could this happen again whenever I have a long term, high heat procedure. I considered replacing the thing but all my appliances are Jenn air (they were there when I moved in 2 yrs. ago) and it fits in the space. This microwave was made in 2005. I am a single semi retired woman so it doesn't receive alot of use. I appreciate any suggestions or words of wisdom that you can provide.

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For electronics, as with most most other types of machines, heat is the enemy.
The circuit boards in a microwave are mounted directly behind the bottom cover, and if the air below he machine is extremely hot, the board's components will slowly cook until they break down.

Assuming that the replacement is mounted in the same place, then your answer is: Yes, it can and most likely will happen again, given the same circumstances.

I see 2 logical options to help save the microwave;
The first is to block the heat, by adding a heat-shield under the microwave.
There are a few presentable models on the market, and they're just a simple aluminum diffuser with a thin layer of insulation behind it.
The second is to redirect the heat, by setting a small fan on the counter next to the stove (just a few inches taller than the pots on the burners) that will push the rising heat away from your microwave.

The 'fan plan' is an old-school quick-fix that you can pull out when you need it, and will work fine while you shop/hunt for a proper heat-shield that fits your decor.


***Don't forget to VOTE for the guys who take an interest in helping!

Posted on Sep 12, 2010

Testimonial: "what a treat to have a response and solution. Thank you for the information--my next purchase--after repairing the microwave--will be a fan!"

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