Question about GE Microwave Ovens

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Power but blank screen

Operated empty for a few minutes . overheated & tripped circuit breaker reset breaker but micro wave now has blank screen

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  • GE Master
  • 17,130 Answers

Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean, solder and reset the board. Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html

If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron. Check this link to know how a microwave works:

http://www.espares.co.uk/advice/microwave/a/5/1443/how-a-microwave-oven-works.html

Posted on Jan 22, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Roper Microwave (mhe14xmq dec. 2003) trips breaker...

you might have to reset your your power settings on the micro.

Posted on Sep 21, 2008

  • 1 Answer

SOURCE: A circuit breaker tripped and

Our frigidare microwave was working fine and then it stopped the breaker was checked is there a reset button on the back of the built in units?

Posted on Nov 02, 2008

SOURCE: Circuit breaker continually trips immediately when used

check for a shorted hi voltage capacieor ,transistor or shorted multiplier diode

Posted on Nov 09, 2008

  • 8404 Answers

SOURCE: How many micro wave ovens will a 20 amp circuit support?

Please stick with me to the end ... some examples are for example only. There is no 1000 watt circuit per'ci.

This will not be possible overload, this is an accident waiting to jump on you, my friend

Install dedicated circuits for these ovens, my friend. It will cost you a little but will be better than having dissatisfied guests or talking to the zoning board or boarding house authority or (gasp) the fire inspector after the fire.

If you don't do this, when the breakers start flipping off, tenants will run extension cords to outlets that have power. A whole different and worse, problem!

Rule of thumb, lighting circuits should be designed to operate at 80%, for example, if you have 800 watts of lights on a 1000 watt circuit, you are at the max.

So, there is a possibility that your circuit for lights is already near max. Adding ovens is trouble. Don't forget the iPOds and cell phone chargers as well as lap top chargers, walkman chargers (older students), little TV's, DVD players, clock radio's, electric shavers, curling irons, steamers, popcorn makers, lava lamps and occasional electric heaters that will be snuck into the room.

What is a 1000 watt circuit ... good question. Ohms law comes into play here.

Volts X Amps = Watts
120 volts X 8.333 amps = 500 watts (a smoothie blender) 300 watts (slow cooker) 200 watts (hand mixer) = 1000 watts.


A 15 amp circuit will protect #14 wire and can carry about 1800 watts (a toaster (1500 watts), for example).

A 20 amp circuit will protect #12 wire and can carry about 2400 watts (i am using a big paint brush here. these numbers are pretty close but not exact and I am not a licensed electrician.)

When I wire, I aim lots lower, preferring to OVER build than to under build.

10 amp circuits are rare in modern homes. In general practice, if the need was to be protected at 10 amps, the wire used in the circuit would be #14 and it would be protected by the breaker at 10 amps. In this case, it is the device plugged into this 10 amp circuit that needs protection rather than the #14 wire (which would be technically oversized)

Another consideration for you is where is the water? If you have an outlet that is 5 feet from a water source (bath - kitchen - etc) it must be protected by a GFIC

A 30 amp circut will protect #10 wire --- but this is not a normal household circuit.

Maybe the best option is for you to have your electrician install a sub panel in the vicinity of use and run several 20 amp circuits from that location to the various rooms.

The answer to your question "How many (1150 watt)micro wave ovens will a 20 (amp circuit handle)" is TWO with nothing else on the line. The National Code requires dedicated circuits for micro wave ovens, BTW. A commercial application may have a different (more stringent) standard in your town.

Thanks for the opportunity to answer your question and thanks for your interest in FixYa.com

Please vote - positive comments appreciated by volunteer question catchers.

thanks

a

Posted on Dec 13, 2009

  • 119 Answers

SOURCE: No power to Panasonic NN-S252 microwave oven

follow the incoming mains lead into the microwave their is a small pcb with a fuse their check this first

Posted on Feb 20, 2010

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That unit shows that it takes 15 or 20 AMPS to run. What is the breaker amperage on the circuit where it is plugged in? Is the breaker a GFCI? You can tell by looking for the two buttons on the circuit breaker or the outlet.

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I accidently ran it for a few minutes wih nothing in it. I turned it off and everyting seemed fine. Later I walked in kitchen and there is no light, power or anything.


I assume you checked the power cord and house power circuit breaker panel... possibly tripped unrelated to your running the microwave empty.

(the following is from http://www.kellerstudio.de/repairfaq/sam/micfaq.htm#mictotdo)


The microwave oven may be powered from a GFCI outlet or downstream of one and the GFCI may have tripped. (Removing a broken oven lamp has been known to happen.) The GFCI outlet may not be in an obvious location but first check the countertop outlets. The tripped GFCI could be in the garage or almost anywhere else! Pushing the RESET button may be all that's needed.

Next, try to set the clock. With some ovens the screen will be totally blank following a power outage - there may be nothing wrong with it. Furthermore, some ovens will not allow you perform any cooking related actions until the clock is set to a valid time.

If those are not the problems, then the main fuse is the most likely suspect for a totally dead microwave.
Remember, while you can do some repairs on you microwave, what you don't know can kill you... even on an unplugged microwave, so make sure you understand the dangers and how to reduce them before you try anything inside a microwave. If you want to do more yourself, let me know and I will point you in the direction of some good resources.

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Hi,


Circuit Breakers do weaken over usage. It is not usually a time factor as much as a load factor. Each time a circuit breaker trips, it loses its ability to carry the same load as it did previously. In other words, a 15 amp breaker only carries the ability to carry 15 amps once. I recommend replacing the circuit breaker with one that has a matching rating. If you do feel up sizing is necessary, check the load rating of the appliances to make sure the additional size really is necessary. Increasing power to appliances that shouldn't need it increases the risks of potential electrical fires and masking real issues. Try changing it with higher amp breakers.



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Sep 27, 2010 | Microwave Ovens

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The circuit breaker to the micro wave was tripped and when reset the microwave did not work it just hums also the lights and fan does not work. What's up with that?


the hi voltage transformer is still operating, but the rest is dead, you could remove outer cover and see if there are 2 fuses, most only have 1 fuse, sounds like new microwave time

Oct 09, 2009 | Microwave Ovens

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The past Few days the microwave would trip the breaker. today I went to use it and it worked for 30 seconds when I checked what I was heating and turned it bakc on and it would not work


Microwaves that are either built in, a part of the oven, or over the range are on a dedicated circuit by law. This means nothing else could have tripped that breaker but the microwave.
If it has a problem severe enough to trip a 20 amp breaker several times, it is only getting worse each time you reset the breaker and turn it on.
There is a possible chance of fire. I recommend you turn the circuit breaker off and replace the microwave. Is it a plug in, or over the range type?

May 18, 2009 | Microwave Ovens

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Roper Microwave (mhe14xmq dec. 2003) trips breaker...


you might have to reset your your power settings on the micro.

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GE Spacesaver microwave trips the circuit breaker


Since power = voltage X current, 1.58kW / 120VAC = 13.166A

So this unit should be fine on a 15A breaker unless the breaker is bad, the wiring or a connection is loose somewhere between the breaker and the microwave, or the microwave's magnetron or high voltage transformer are failing and drawing extra current.

Microwaves should really be on the own separate breaker if at all possible. Plus, the more a breaker trips, the more work out it gets.

Have you measured the voltage at the outlet? If that's off, current and power will be affected. It should be about 110-125VAC.

A good power test for outlet and wiring integrity is a toaster, toaster oven, or hair dryer rated at about 1500 watts.

If it doesn't run and heat steadily, then there may be a problem with the house wiring or breaker.

If it passes this test, the problem is likely in the microwave.

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

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