Question about Microwave Ovens

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I have a samsung microwave model # smh1816s working fine all of sudden stop working no power is there a fuze if so where

Microwave only been in service for a year and was working fine...all of a sudden it stopped working no power at all was wondering if a fuze blew??

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  • Microwave Ovens Expert
  • 650 Answers

They do have a fuse. They also have thermal cutoffs and possibly a thermal flame sensor fuse. the main fuse would be near the control panel the thermal flame sensor is usually near the back of the cavity usually on the left side on the outside of the cavity.

Posted on Nov 15, 2014

  • rich
    rich Nov 15, 2014

    Thank u for the info I will start there

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Posted on Jan 02, 2017

MicrowaveSvc
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SOURCE: LG Microwave LMVM2055ST Just stopped working!

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

You will need the
free Acrobat Reader to view or print it in case you don't have it.

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


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.

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.

To order Goldstar / L.G. parts, visit Vance Baldwin Electronics. You'll probably have to call them.

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

Posted on Dec 13, 2008

  • 17 Answers

SOURCE: GEJE2160 Stop Working

It probably blew the main power fuse in side the oven. This may have happen because of a failure in the microwave or a line voltage surge or what ever. Repalce the fuse and see if it work. be sure to unplug it before doing this, If this does not fix it then you have a failure in the oven some were.
good luck

Posted on May 17, 2008

  • 1 Answer

SOURCE: My microwave has stopped working and switched on suddenly!!

My Sharp microwave oven touchpad stopped working. It's about 3 years old. Is there any way to get it working again?

Posted on May 25, 2008

  • 4 Answers

SOURCE: Goldstar MIcrowave stopped working when light bulb blew out.

when that happen to me i change the bulb and the fuse in of the microwave f the don't work send it to the company that made it and they should tell what wrong.

Posted on Apr 03, 2009

  • 574 Answers

SOURCE: 1 yr old Oster 0.7 CuFt Microwave Model OM0701A stopped working

could be door interlock switches, door misalignment

Posted on Aug 29, 2009

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No, your fuse has blown due to an electrical problem. Ill get right to it. Very possibly the capacitor and HV diode need replacement.90% of the time this occurs. If by chance it still doesn't heat or still blows fuses, replace the magnetron. Before you do all this, look carefully at the transformer and look for any indication of burning, or flashing having taken place. If so, replace the transformer first.(Transformer doesnt often go faulty).

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GEJE2160 Stop Working


It probably blew the main power fuse in side the oven. This may have happen because of a failure in the microwave or a line voltage surge or what ever. Repalce the fuse and see if it work. be sure to unplug it before doing this, If this does not fix it then you have a failure in the oven some were.
good luck

May 16, 2008 | GE JVM1850 1000 Watts Microwave Oven

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My microwave has stopped working and switched on suddenly!!


Sounds just like a bad door switch or door switch mount. Probably the upper one. Safety info, disassembly tips, and door switch test and replacement info are all available at our Web site. See http://tinyurl.com/yzjozk

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