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My microwave over my stove just stop working. There is power in the wall receptacle, the circuit breaker has not tripped,what is the problem.The microwave is a LG appliance model#LMV1630ST, serial #704TAHQoo417

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We have the service manual for this model and have uploaded it to our site here to help you.

A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

Ifthe 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 / bodyof the oven.

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

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

Whenchecking thermostats, if it has a hood fan thermostat, that should readopen, 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.

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

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

You should do a continuity test onthe fuse while it's in the holder (with the microwave unplugged, ofcourse) 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 meterleads against the ends, it can allow internal contact to be made andmake a bad fuse appear to be good.

ForGoldstar / LG / L.G. parts, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat8-5 CT) and choose the appropriate prompt from the menu or visit here.

We're happy to help you and we'd appreciate yourthoughtful rating of our answer.

Posted on Jul 19, 2008

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Microwave clock and panel was lit in am wasn't used but in evening when went to use it isn't lit and won't work at all


Hello Anonymous

At the risk of starting with the very basics, when you say that the clock and panel aren't lit and wont' work at all, the first place to look is the wall power. You may be missing power from the wall because:
  1. The microwave isn't plugged in. Someone may have yanked a plug to plug in a mixer, phone charger, thanksgiving animated ornament, or what have you. Trace the cord back and make sure it's plugged in.
  2. Make sure the outlet has power. Take some plug-in-able item and plug to the outlet and see if it can turn on. If not:
  1. A number of kitchen outlets may have GFI switches, especially if they are anywhere near sinks. The GFI may have been tripped. There should be a reset switch in the middle of the plug. See if it's tripped, and reset if necessary.
  2. The breaker may have been tripped. Most kitchen circuits are wired to 20Amp breakers. If this is elsewhere in the house, like in an entertainment room or such, it is likely a 15 Amp outlet. Microwaves can draw a fair amount of power. Someone using another kitchen appliance, hair dryer, or what have you, on the same circuit, may have tripped the breaker. Newer code may specify an AFI or GFI breaker for kitchen outlets. In that case, a fault with something else on the circuit may have tripped the breaker. If that is the case, and it trips again, talk to an electrician. You don't want a fault like that undiagnosed.

    3) You may also want to try plugging the microwave into another outlet, even if the normal outlet seems OK

    If there's wall power and a good plug-in, then you work back to the microwave itself. A number will have fuses. Also, there may be interlocks that kick in if, for instance, the carousel rotation is impeded - that can mean something on the carousel is hitting a wall, which can risk tipping something over and spilling, or risk mucking up the reduction gears for the carousel axle if it keeps pushing.

    At that point, looking for specifics on your microwave model will be needed. You may also try the Microsoft Support approach - i.e unplug it for 5 minutes, then plug it back in and see if it works.

    Hoping this helps, Good Luck!

Nov 18, 2015 | In Microwave Ovens

1 Answer

Blowing breaker


In general house hold circuit breaker of the house is 15 Amps or 20 Amps.

Either you have defected (weak) circuit breaker and wiring or bad Microwave oven.

The 99.99 % house hold Microwave ovens pull less than 15 Amps. They may have internal ceramic 15A fuse or 15 Amp internal circuit breaker.

To isolate your problem:

1. Plug your Microwave oven to different areas (different electrical circuit) if the different circuit breaker still trips... your Microwave oven has a short - Most of them has a small ceramic fuse 15 amps fuse.-also check some inter lock switches at door .

2. If the Microwave oven works Ok then you may have:

2a. You may overload the existing electrical circuit, try to unplug some other appliances

2b. You may have bad electrical outlet receptacle (Replace it with the same type , - may need helps from licensed electrician)

2c. Weak or defect house hold circuit breaker. (Replace it with the same type , brand - may need helps from licensed electrician)


Jan 24, 2014 | Goldstar Microwave Ovens

1 Answer

On breaker 7 that runs the lights and receptacles in 2 bedrooms, the light in my crawlspace, the light in the attic, two ceiling lights in the kitchen (but no receptacles), and the outlet for the...


1) You must see if the circuit where the microwave is overload, you must use the amperimeter and see how many amperes are reading when all the load in the circuit 7 are running. if is normal about 10amp-12amps the circuit is o.k
2) test the c.breaker can be faulty, since there are NOT tripped.
3) However you must see if the lines for power in that circuit is loose?
4) Tight very well the Neutral +Ground
5) see the diagram attached, and correct if the outlet is wrong.
6) If you are NOT qualified to do this electrical job , call some electrician for to avoid danger to your home or yourself.

God bless you198ace60-27b8-4867-bf57-4b0086ba4f59.jpg5755a5d4-1228-483b-969d-82f0a795cbc3.gif
Of course you must test the microwave magnetron for faulty or short in the magnetron+diode+transformer+capacitor. ISOLATED the microwave first and then troubleshooting the circuit of your home.
God bless you

Nov 01, 2013 | Whirlpool Microwave Ovens

1 Answer

Lg microwave oven trips circuit breaker


The magnetron probably has a partial short pulling more current than normal as it runs, the other two items that give trouble is the high voltage diode, "sometimes cracks" to the high voltage capacitor, "usually shorts"

Mar 29, 2012 | LG Microwave Ovens

2 Answers

No power to clock or microwave. Have checked breakers.


The main fuse in the microwave oven has probably blown, caused by a defective door.

Feb 07, 2011 | Jenn-Air JMC7000 Microwave Oven

1 Answer

GE Spacemaker Microwave JVM1441 BH04 tripping circuit breaker


your power transformer for the magnetron could have a shorted primary power winding,the door safety interlock switch could be mis-adjusted,this normally blows the internal unit fuse,a shorted high voltage capacitor,or diode,a bare wire inside the unit,more than the microwave on that circuit or a weak circuit breaker in the house power panel

Jun 19, 2010 | GE JVM1441 Microwave Oven

1 Answer

Loss of power to Whirlpool over the stove AccuWave GH5184XPS-4. Checked circuit breaker and GFI -all OK. No other electrical problems known.


Remove unit and check trip/reset switch on unit. Double check GFCI receptacle with plug tester with GFCI test button.

Jan 12, 2010 | Whirlpool GH5184XPQ Microwave Oven

1 Answer

I went to use my mirowave & it is completely gone. I pushed every button that I could & nothing happens. What should I do


first check the breaker in the electrical panel. your microwave should be on a circuit with nothing else. Depending on when the house was constructed. If the breaker is tripped turn it off and back on. If the microwave is plugged into a gfic outlet check to see if the receptacle needs reset. There will be a reset button on the receptacle. Their may be a orange light on the receptacle.

Jan 11, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Whirlpool Range RF315PXDW. Electric range. Top burners and oven will not turn on. Clock on top of stove and oven light turn on. Oven preheat timer operates but heating elements in oven do not turn on....


It sounds like you are missing part of your input voltage.

I would take a voltage reading at the receptacle and confirm you are reading 220-240VAC. Some homes have the 220 service receptacles wired up with two 120 volt breakers to make up your 220 service. If your home is configured this way, you may have one of the breakers tripped. Or, the receptacle itself may be bad. If you confirm you have the correct voltage at the receptacle, your power cord may be bad.

The reason the clock and display will still appear to work is because the clock only uses 110-120VAC and is tapped off the source voltage. The surface burners and the oven heating elements, however, require the full 220 service.

If you are confused by this explanation, please post back and let me know. Hopefully, this is a problem that will not require any parts or a service call. If the power cord is bad, you can purchase a replacement at any hardware store. I hope this information is helpful.

Dec 19, 2009 | Microwave Ovens

1 Answer

There is no power to the unit at all circuit breaker not tripped


blown fuse-easy fix -find book-it is shown behind service panel

Nov 04, 2008 | GE JVM1651 Microwave Oven

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