Question about GE Spacemaker JVM1640SJ Microwave Oven

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Microwave power interruption

Everything works until you start to cook, then after about 3 sec. the power cuts off and the display says there is a power failure, check your food. There are not power issues other than that.

Posted by Rebecca Killian on

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The unit may be detecting a mal-functioning magnetron.

Posted on Jun 02, 2007

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My microwave shuts off, black no power when ever I cook tv dinners, potatoes etc. after 2.5 or 3 minutes. After 10 minutes or so, power comes back on and it displays PF. lots of steam inside after.

Hi Kerry,
"PF" is power falure if you didn't aready know this. It sounds to me like the coolig fan might be running slow or there is blocked or restricted air flow through the unit. This cooling fan is only for the HV transformer and magnetron. Sometimes you may get air flow around the door but this is incidental. The PF tells me that the power is being interrupted either at the power source (wall outlet or circuit breaker) or the magnetron TCO is cutting out. It also could be a bad magnetron running too hot. As far as the steam goes, I usually just leave the door open on my microwave for 10 or 15 minutes to let the condensation evaporate.
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GE Spacemaker JVM 1631: Starts working and stops 3 sec later??

your magnetron is leaking RF do not use until you replace the magnetron, it is interfering with the pc board
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I have Emerson Microwave #mw8999sv which has the Express Cook option- cooking 1 - 6 minutes. How do I cook for 1 minute 30 seconds, etc.? Thank you.

The owner's manual is here. On page 10 we find:

COOKING IN ONE STAGE
1. Press the POWER button; the Microwave and High
Cook indicators will light and “PL 10” will light in the
display.
2. Press the POWER button different times to set the
desired power; the display will show the percentage
you chose. If selecting power level 70%-10%, the
Low Cook indicator will light instead of the High
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3. Press number keys to set the desired cooking time.
OPERATION(CONTINUED)
4. Press the START/+30SEC. button to start cooking;
the Microwave and one of the Cook indicators will
blink and the display will countdown the remaining
cooking time in minutes and seconds. It will beep
five times when cooking is completed.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.


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Whirlpool vt255 microwave does not stop

If your microwave oven doesn't appear to shut off when the door is open, you may have a problem with the door switch. The door switches, often referred to as interlock switches, provide power to the various components of the microwave. They are designed to interrupt the power when the door is open.
https://www.fix.com/repair/appliance/microwave/doesnt-shut-off/
https://www.youtube.com/watch?v=y2zIRmaaH0A
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Power cuts out after about 5 seconds

Hi try unplugging form mains for an hour this will reset any settings back to factory settings let me know what happens after doing this then i can assist you further ok
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Microwave cuts off after heating for about 3-4 minutes

There is a overtemperature device inside that is shuting you down until things cool off. Take the cover off and clean up everything as much as possible. Grease from the cooking can get all over everything inside and collect dust buildup enough to obstruct the airflow and cause overheting.
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New microwave not starting

Chances are the oven is designed for 60HZ and your supply is 50Hz. This will cause the unit to shut down because it thinks it is not getting the proper "interrupt" signal from the power line. You can check the owner's manual (or model number tag) and the manual for the converter.
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