Testing dinnerware or cookware before use in the microwave of your Modern Maid range/microwave combo
To test a dish or cookware for safe use inside your microwave, put it into the oven with a cup of water beside it. Start the microwave at 100% power for one minute. If the dish gets hot, do not use it.
Some dishes (melamine, some ceramic dinnerware, etc.) absorb microwave energy, becoming too hot to handle and slowing cooking times. Cooking in metal containers not designed for microwave use could damage the oven, as could containers with hidden metal (twist-ties, foil lining, staples, metallic glaze or trim).
Troubleshooting your Modern Maid range/microwave combo when the broiler won't work
A broken broiler element or failed electronic oven control board could prevent the broiler from working in an range/microwave combo.
A broken oven temperature sensor probe also may prevent the broil element from heating or staying on in oven. When the oven temperature sensor probe fails, you'll likely see temperature control problems in the bake mode as well.
You can test the oven temperature sensor probe by unplugging the range and measuring sensor probe resistance using a multimeter. You should measure about 1,080 ohms of resistance through most probes at room temperature. Refer to the tech sheet for the probe's resistance specification for your range. You can likely find the tech sheet in the control console or taped to the back of the range. Replace the oven temperature sensor probe if you don't measure the correct resistance through the probe. If the probe is okay, then you may need to replace the electronic oven control board.