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Unit will not power on at all, ac outlet is good

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  • Microwave Ovens Master
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Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic
Microwave Oven Troubleshooting Tips

heatman101

Posted on Mar 27, 2011

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6ya6ya
  • 2 Answers

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1 Answer

Replacing fuse in samsung microwave model number shm9187


there should be a fuse inside on the AC line and it may be on the inverter(power) board of the unit.

Nov 02, 2012 | Samsung 1.8 Cu. Ft. Over-the-Range...

1 Answer

No lights - Acts Like It Has No Power At All


see the diagram and pictorial and proceed with common sense:
1) test the fuse for open or band contact with VOM,see the diagram attached how to do it
2)check the switch door hook or door release button,when they are broken they do not touch the switch, and will NOT start. test for open
see the diagram
7_17_2012_12_56_50_pm.gif7_17_2012_12_57_31_pm.jpg7_17_2012_12_58_02_pm.jpg

Jul 16, 2012 | Microwave Ovens

1 Answer

EMERSON MWG9115SL-D WILL NOT POWER UP


Hello, welcome to Fixya!

The unit not powering up is an indication that it has a power fault.

First, remove the unit's power cord from the wall, wait for about 30mins, then plug it back in. It may cool by then and might power on. If it doesn't power on, plug it into another outlet, to make sure there electricity entering into the unit.

If plugging into another power outlet doesn't power it on then the unit is most likely having a power problem.

When electric current comes from the power outlet into the cooker, it goes straight into the power supply board which then circulates the current into the unit. So if the cooker doesn't power on, the first thing is to make sure there is power entering into the machine.

So check the power cord, if it is a 3-pin plug, it must have a fuse in it. check the fuse if it is not blown. if fuse is intact, then power supply board should be checked.

If any machine or electronics device doesn't power on, it means its having a power problem. it might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby not making it to power on.

This unit must have a power supply board in it where power enters from the mains. A capacitor, fuse, diode, etc may have been defective on the power board and maybe that's why its not making the unit turn on. There might also be some disconnection or something, inside the unit which is not making it to power on.

To actually find out what's wrong, you need to disassemble the unit with a screw driver and check what's wrong. You will be needing a meter and continuity tester in order to read the components on the power board, once you detect any bad component, you can make necessary replacement at any electronics accessories store withing our vicinity. This is the only way by which you can detect the problem.

Of course, testing the power board with a meter will require someone that has the ability. So it you can't, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Regards.

Nov 22, 2011 | Microwave Ovens

1 Answer

My GE spacemaker xl1400 model JVM1451BA 001 DOES NOT TURN ON, serial # HT9897895 , it wont make a noise or nothing, not lights, someone told me its a fuse, but I dont know what the fuse is called to go to...


First try plugging it in a different power outlet to eliminate a possible defective AC outlet, than if it still does not work, your friend could be correct it could be a fuse, if you have electrical skills you can verify your self. first unplug the power cable, than unscrew the cover to get to the electronic board, locate all the ceramic fuses and with a good multimeter set to (Ohms) check the continuity of all fuses if it reads 0 ohms it's good if it reads nothing than it is bad, replace that fuse with the same amperage and type than put the cover of the oven back, plug the power cable and give it a test if the fuse burns again than the problem is much worse, it could be a defective safety switch on the door frame or a defective circuit board, take it to a good repair shop...

REMEMBER TO ALWAYS UNPLUG THE POWER CABLE BEFORE OPENING THE UNIT!!!

Hope this helps!

Jun 18, 2011 | Microwave Ovens

2 Answers

No power, display is dead. Is there an internal fuse that can be replaced?


Sorry to read about your problem.
It seems your have a general failure in the power control or switch failure on the unit. if you unit has power, and things lite. it is more likely you have a control/switch problem,

Their is no fuse to replace

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

Dec 22, 2010 | GE XL1800 1100 Watts Microwave Oven

1 Answer

I had a fire in the microwave and now it doesn't turn on. Is there a reset button or do I have to go buy a new one? cbierke@gmail.com


It sounds like an internal fuse has blown. Unplug unit and carefully open the top cover to provide access to the A.C. power cord entry point. Hopefully the fuse is located in that area and is the older style 1/2" long glass or ceramic body with metal endcap on each end. ONLY REPLACE WITH A FUSE THAT HAS IDENTICAL ELECTRICAL RATINGS! After replacing the fuse and top cover reconnect the unit to the A.C. outlet and check to see if it is still dead. Still dead = repair shop time.

NOTE: Use a "fused" A.C. outlet strip (usually 6 outlets with circuit breaker) for your "after fuse replaced" testing. This gives you additional protection against accidentally tripping a breaker in your homes electrical panel.

Oct 19, 2010 | Maytag Microwave Ovens

1 Answer

Baked potatoes went up in flames now microwave has no power no lights. power outlet has 110v ac


Were the potatoes wrapped in foil? If so, the megatron tube was burned out. Replace unit.

Nov 06, 2009 | Kenmore 62622 Microwave Oven

1 Answer

The mircowave has no power, outlet works, just mirco strop workin


HI, the popping sound that you herd was the result of a failed HV capacitor. This failure will render the unit inoperable, as you has witnessed at this time. Replacing this failed HV capacitor, will correct this issue. I would also advise to check the cut-off fuse and in-line AC fuse as well. There may be some issues concerning the integrity of these fuses as well.

Sep 11, 2009 | Goldstar MV-1501 Microwave Oven

1 Answer

The microwave runs for 3 to 4 seconds and then shuts down. I have to re enter the time, date and press start. It runs for 3 to 4 seconds and I repeat. Other times, it works just fine. But needs restarts...


If it is resetting, there is a chance that the problem is not with the microwave but the AC supply. These units draw a bunch of current and if there are any sloppy connections or a bad outlet (if plugged in), the connection can fail long enough to drop the AC input far enough to turn the unit off.
A circuit breaker (in your main power panel) can cause this too; I've replaced bad breakers in our new home already that were doing the same kind of thing your microwave is doing.
A bad AC connection can also be a fire hazard since they are also capable of getting hot enough to start a fire.
If the source of AC is via an outlet, check around it to ensure that there is no discoloration of the outlet's exposed plastic. If ther is, that is a sure sign of poor contact between the unit's plug and the outlet's contacts.
There is a remote chance that the magnetron is developing an internal problem; these are vacuum tubes of a sort and have a fast-heat heater element in a cathode that spits out electrons. One type of failure is when the cathode and heater come in contact because of the expansion of the heater element (happens each time it is turned on) then a very high voltage is brought into contact with the heater and causes a momentary short and high currents.

Aug 11, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Cuts off after 2 seconds


Just a hunch; plug it in to a different outlet.

AC outlets are only marginal when new and that unit can draw well over 10 amps.
If the contacts are failing, the unit will think it has been disconnected, killing off the clock setting too.

If that doesn't help, try plugging another high power appliance, an iron, toaster or coffee maker, into the same outlet used for the GE to see if they behave normally.

Jul 06, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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