I don't know how to turn up the cooking heat on my chef mate microwave
Sounds like a classic bad door switch or switch holder. If you or a friend decide to work on it, we have *critical* safety info, info on door switch testing and replacement, and oven disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383
By the way, my answer presumes you're talking about the internal cooling fan, not the hood fan.
Hood fan trouble is usually a failing thermostat inside the oven.
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Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Microwave Oven Basic Troubleshooting Tips
heatman101
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