Question about GE JVM1870 Microwave Oven

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Runs but won't heat

Microwave runs but will not heat

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  • Anonymous Jan 14, 2009

    Microwave doen't heat all the time. The light and turn table work when running. There is a very fast blinking when the oven is running.

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Does the turn table and interior light come on?

Posted on Nov 25, 2008

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Our goldstar microwave wii not work. It will do everything but heat. It was manufactured in 12/2005. It has 1000 watts. Serial number is 512takkoo189. I need your help. Thanks, Linda

Posted on Jan 14, 2009

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Microwave won't heat food


9 out of 10 times if all else is working then it is the magnatron rod that does the heating chances are it will be more expensive than to purchase a new microwave.

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Microwaves are a quick, convenient solution to the hassle of preparing and cooking hot dinners. They are popular appliances with students and large families where food often needs to be prepared fast. Microwaves use radio wave technology harnessed through an antenna, known as a "magnetron," to create friction between food or liquid molecules, causing them to heat up. Some microwaves can cease to function properly, resulting in the appliance running but failing to produce any heat.

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    • Magnetron tubes are often the source of heating problems in microwaves. Before having any repair work done, check the warranty on your microwave. Many companies offer 10-year warranties on magnetron tubes so you may be able to get it repaired professionally for free. Otherwise, unplug the microwave then remove the rear casing with a screwdriver. Locate the tube inside the microwave and check it for burn marks. A burnt tube cannot usually be repaired and will require replacement. A tube that doesn't appear burnt should be tested by a qualified technician to see if it can be repaired.
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    • A microwave capacitor holds electricity as the appliance is running. A malfunctioning capacitor can lead to the microwave not heating, along with an irritating buzzing sound. Test the capacitor by first disconnecting the power then removing the wires attached to the capacitor. A capacitor with burn marks is usually damaged beyond repair and will require replacement. A capacitor can be tested by connecting each of the probes of an ohmmeter to the capacitor terminal. Each probe should provide a reading of infinity if the capacitor is working properly.
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    • The diode in a microwave oven is a one-way pathway that channels electricity from the capacitor. A malfunctioning diode can sometimes be the cause of a microwave that won't heat. The heating problem is often accompanied by a loud buzzing noise. You can test the diode by first unplugging the microwave oven, disconnecting the diode from the capacitor then measuring the level of electricity inside the diode with an ohmmeter. The ohmmeter can determine whether the electricity in the diode is flowing in one direction as it should. In most cases, the magnetron tube will have to replaced as well if the diode is damaged.
    Safety
    • Disconnecting the plug from your microwave to carry out an inspection does not guarantee safety. Even an unplugged microwave still has electricity running through its components, which can lead to severe electric shocks. Unless you have previous experience in dealing with electrical appliances, it is advisable to hire a technician to test component parts rather than undertake the job yourself. Anyone without a basic knowledge of electrical currents and safety should avoid testing components altogether.

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