Question about GE Spacemaker JVM1640SJ Microwave Oven

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No Power Spacemaker Microwave completely no power.Checked hardlines and internal wiring for current and all was good except something called "thermal hood" (fuse?) located next to fan. This is showing no current using a multimeter. i ordered a new one and the new one also has no this correct showing for this part?

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My microwave was totally dead. Things I discovered: 1) There is an easily replacable fuse accessed by taking off the top front vent cover (two screws on top, gently massage off) and then the inside plastic grill. UNPLUG before doing this! 2) Pop off two wires on either end of fuse holder for safety. Then pop out fuse and replace. For more extensive help, there is an evelope with a wiring diagram inside the case on the inside wall! Very helpful when diagnosing the surface lamp problem (I forgot to plug the ballast back in when I closed up the bottom).

Posted on May 15, 2008


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You could have burned something out on unit. Check fuse or contact GE. Look in manual for trouble shooting tips.

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see the diagram for troubleshooting.
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Where do you find the internal fuse

There will be one inside directly in line with the power cord and there may be a thermal fuse on the inverter board that powers the unit.

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1 Answer

The fuse was blown, I replaced the fuse and the display came back. I tried to heat something to see if it was fixed and it dimmed the whole house before blowing the fuse again. Is it TOAST?

Sorry to read about your problem.

It seems your have a general failure in the power control or switch failure on the unit. if your unit has power, and things lite. it is more likely you have a control/switch problem, you did not give a model number, so i cant tell you if a service call will be worth it.

Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response, thanks and good luck

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1 Answer

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1 Answer

My niece cooked something that was supposed to be in for 4 min, 40 min and then the oven went completely dead, no power at all, no lights. The breaker is fine. What do you think it is?

These can have thermal fuses inside and if it was very steamy and hot it may have blown. There are also internal fuses in the micro but these are dangerous to work inside if you do not know what not to touch.

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1 Answer

Power but no heat

If you have no power in the microwave, check to see if the outlet is good by plugging something else into it. If there is power, you may have blown the internal thermal fuse, or the door switch may be defective. Either of these will keep your microwave from working. The thermal fuse protects both you and the oven by blowing if there is too much power going through it. When a fuse blows, it means that the wire inside that conducts electricity has broken, usually because of an electrical overload. When it blows, you need to have a professional microwave repair person replace it. If this is not the problem, it may be that your door switch has become defective. If the door switch isn't working properly, it won't let the circuit complete to operate microwave components.

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I have model GE Microwave serial # JVM2070SK02. I start to cook something and it shuts off 5~10 seconds. Keyboard is still lit up, but no clock, fan, light and you cannot operate anything on the key pad. Unplug the unit and it resets. Sometimes it cooks, sometimes it doesn't? It is getting more frequent with the shutting down problem?

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