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Re: Built-in microwave model JVM1870. Unit went dead while cooking a large meal after about 2o minutes of continuous use. Checked outlet after pulling plug. Outlet is OK. Oven did not come back on. Therefore, it looks like the internal fuse needs replacing. Can I do this myself? Do I need to remove the whole unit from the cabinets? Can you tell me how it might be attached to the cabinet?

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If it goes dead for a while during or after cooking then comes back on, the magnetron probably overheated and caused the magnetron thermal fuse to open.

If you or someone you know wants to look into this, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Apr 18, 2008

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Unit was working than just shut down, the display went dead.


hello,

the solutionhas noting to do with reset button or code

what the problem is from the element (heat provider)it is always is silver colour all it means is there is disconnection from it or it is bad.

what you need to do to fix up your oven is to unscrew it and then trace down the wire to the heater (element) but if you did not see any sign of disconnection then you will have to make a change of the element it mean bad .

thank you and thanks for using fixya.

Jun 01, 2010 | Sharp KB-6015K 1000 Watts Convection /...

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We were cooking a dish and stopped it at the mid point and to add some sauce and it would not restart. Clock and everything is out. Everything esle in house works, no circuit breakers were off. The Jenn...


The same thing happened to ours last night. We went to add another minute of cooking time and realized the oven was dead - no clock, no display of any kind, and no more cooking!

I've verified the power outlet is OK. Ideas???

Feb 19, 2010 | Jenn-Air M170 Microwave Oven

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When pushed, the 30 sec button says 3 minutes. none of the display buttons work.


Have you inadvertently programmed your microwave for "autostart"?
Your model microwave has the ability to be programmed to go on at any given time of the day/night, even when you're not home so that you can have a defrosted and cooked meal waiting for you when you get in.
I know that if you hit the 30 sec button or the minute button when your micro is programmed to autostart it will tell you the time that it's programmed to autostart or the amount of time that's left for it continue cooking.

Have you tried unplugging it for a few minutes?
This should clear it's memory and then all you'll have to do is set the time on the regular clock if you want.

Here's where you can download and read your owners manual for further instructions on how to use the autostart feature and everything else:

http://www.fixya.com/support/p113437-emerson_mw8107wa_1000_watts_microwave/manual-11318

Dec 26, 2009 | Emerson MW8107WA Microwave Oven

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my kenmore 565 has gone out...no power. We have checked the power supply works. Can we check the internal fuse?

Nov 17, 2009 | Microwave Ovens

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Total power loss during use


Check the voltage on the outlet,make sure it is 115v -- 122volts max, any less will cause it shut off, make sure the polarity off the outlet is correct and it is grounded,check all of your wiring connections, if all this is ok replace unit with a different unit or different supplier of unit

Jan 26, 2009 | Microwave Ovens

2 Answers

My GE Built-in microwave model JVM1870 appears to have died


A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille, on the floor of the oven behind the control panel, between the door switches, or on the filter board near where the cord comes into the unit.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking TCOs or thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If the cavity thermostat needs to be checked or replaced you'll need to pull the oven from the wall.

You can download GE owner's manuals and installation instructions here to make that easier.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Dec 16, 2008 | GE JVM1870 Microwave Oven

1 Answer

GE JVM1870 Spacemaker Microwave Fan Malfunctioning when Cooking


There are two different fans in this model, as with almost all over the range microwaves.

One is the hood vent exhaust fan, which you can turn on and off at will, and which should always be on when cooking on the stove top.

This fan does not automatically come on when you cook with the microwave.

The fan which should always be on (automatically) when you are microwaving is the internal magnetron cooling fan.

If the cooling fan fails, the magnetron can overheat and the thermal cutout (TCO) / thermostat will open, killing the power to the oven. Ideally, this protects the magnetron from being destroyed.

If the thermal device is a thermostat, it will reset when it cools down, and the oven will work.

If the thermal device is a true thermal fuse, it is a one-time device and if it blows, it will have to be replaced.

If your cooling fan is bad, it needs to be replaced before using the microwave.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Sep 16, 2008 | GE JVM1870 Microwave Oven

1 Answer

GE built in microwave is completely dead. We were using the timer when it went dead. The A/C outlet is good. There was a pop sound just before it went dead. The unit is about 6 years old. Is it worth...


A microwave can be dead for many reasons.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.

Jul 03, 2008 | GE Microwave Ovens

1 Answer

Just stop working


A microwave can be dead for many reasons.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can probably find an exploded view by entering your FULL model number here: http://www.searspartsdirect.com

We're happy to help and we appreciate your thoughtful rating of our answer.

Jun 07, 2008 | Kenmore Microwave Ovens

1 Answer

Microwave Power Blew Out - Kenmore Elite Model 721.63763300


This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

If you someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel. It's very helpful when troubleshooting.

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

We're happy to help and we appreciate your thoughtful rating of our answer.

Mar 09, 2008 | Microwave Ovens

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