I have microwave hood combo model 721.80019. I set a cook time, place a cup of water in the oven, close the door and press start. The light comes on, the turntable moves but the water does not heat. this machine is just over a year old. Could the Magnetron be the problem? Is this something I can replace?
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A 1974 Microwave Oven is probably not putting out more than 600 watts. You need to do a power test to determine it's actual power output. Place a 2 cup glass measuring cup with exactly 500 mL of cold water. Record the starting temperature of the water. Run the microwave on 100% power for 18 seconds, using a watch or timer, not the timer on the unit. Take the water out and stir it to make sure that there are no hot or cold spots in the measuring cup. Record the new temperature. Example: 78.4-64.1= 14.3. Multiply 14.3 X 38.75= 554.125. The power output is 554 watts IEC. If the recipe is set for a 1200 watt unit, and your is almost 600 watts, obviously, you would double the cook time. Since this is rough, you need to experiment a bit. If the cook time is 10 minutes, check your product at 8 minutes. Be sure to push the stop button before you open the door when it is in cook mode. This will save wear and tear on door switches and leave the remaining cook time on the timer. Let me know how this works out for you..
If your microwave runs, but doesn'theat your food, verify that you have selected a cooking setting. You mayaccidentally set the timer. Test the magnetron by placing 1 cup of water in themicrowave and heating the water for three minutes. If the water doesn't heat,your magnetron is dead.
Yes! Take it right back to the store for exchange, cause could be a bad magnetron "that heats food" and a couple parts that work together with the magnetron,or there may be issues with the keypad, none of these will be cheap to fix.
Have you tried putting a cup of water in it and cooking on a low power level?
If it buzzes only when it is on the cook cycle, that would narrow it down.
More detals might help us help you, including the model number.