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Stephane Swainson
Stephane Swainson Posted on Jul 12, 2018
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The internal fuse in my Sanyo G400 microwave goes when door is closed and the power is swithed on.

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Deepak Mathur

Deepak Mathur

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  • Expert 101 Answers
  • Posted on Mar 07, 2019
Deepak Mathur
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Check the door switches and its connections if o.k then check HT capacitor for short circuit.

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Apr 18, 2008

SOURCE: Microwave oven runs with door open

This is usually caused by either a bad door switch, a loose door switch mount.

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

Door 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

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

Please feel free to contact me directly if you need more help.

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

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com

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Anonymous

  • 7 Answers
  • Posted on Jun 28, 2009

SOURCE: the fuse blows when i plug the microwave in with the door closed

first you gotta detach the button plate ( the thing with all the buttons) using a flathead screwdriver .Keep pushing it is stuburn. It will pop back in when you are done. the fuse is behind that. just take it out and put the new one in.

Anonymous

  • 576 Answers
  • Posted on Jan 26, 2010

SOURCE: Microwave GE Spacemaker JVM1650SH05 - The light

The bulb may have blown. It is often under an access panel on the side or back that is held on with a screw or two.

Anonymous

  • 8909 Answers
  • Posted on Jan 05, 2011

SOURCE: How do I replace the

I would say the lamp popped and took the fuse, so you will need to replace the lamp also.

Dead appliance, power on wall outlet.

YOUR SAFETY IS PARRAMOUNT!

Attempt this only if you are competent.

If your appliance has absolutely no functions at all, remove it from the mains supply, remove the case and see where the mains lead goes in to the appliance and follow the cable until you find the main fuse.
ONLY USE THE SAME TYPE AND RATING OF FUSE TO REPLACE IT.
The usual cause of this fuse failure is the door switches are contaminated or sticking. Check the door switches before putting power back on to the appliance.
Hope this helps.

Anonymous

  • 6771 Answers
  • Posted on Feb 16, 2011

SOURCE: When we open the microwave door, the fan goes on.

The most likely cause is a defective door switch, that should be repaired for safety reasons.

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1helpful
1answer

My Sanyo microwave model EMD993 just stopped working completely. Any suggestions as to what might be the problem? Has this model got an internal fuse? If so where do I find it?
Ray,
There is an internal fuse.

Unplug your microwave and turn it around and remove the screws holding cover on and then remove the cover. Look for where the power cord goes into the back of the unit and follow the black wire from the cord to where it ends. It should stop an either a circuit board or a fuse holder. Make sure that you replace the fuse with the same amperage fuse as what you take out. You will find the amp rating stamped on one of the silver collars on each end of the fuse. Good luck!

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Apr 03, 2015 • Sanyo Microwave Oven with Convection and...
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Unit has no power nor is display lit up. Have power to cord. tripped breaker. is there an internal fuse behind control panel
Microwave ovens have an internal fuse to protect the unit. Once you remove the white cover it is easily located on a board where the main power cable first goes into. Despite what you hear about dangerous radiation generated by microwave it is sage to turn on the microwave with the white cover off because the radiation stays within the microwave cavity. If you buy pass the door interlock then you may be exposed to some radiation escaping from the door opening. No match can go wrong in a microwave. Usually its something simple like a bad connection a burned fuse .or a burned power supply if it is microprocessor based unit.
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Mar 05, 2015 • Microwave Ovens
0helpful
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Suddenly microwave stopped working
(would really like more info- digital number dead as well?)

(assuming completely dead) Could be a couple of things:
- blown fuses (inside, relatively easy to replace, std size avail at Raioshack) <-- most likely
- cut/loose power cord connection inside.
- (unlikely but worse case scenario) Door was closed crooked- one tong hit one door switch before the other- causing a short circuit internally that "self destructs" the microwave to prevent it ever operating with an open (or even crookedly ajar) door, irradiating any users. Typically it just blows the fuses, but if fuses blow immediately upon replacing and turning power on, then possibly one of the switches fused or melted internally, and needs to be replaced.
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Jan 28, 2014 • Whirlpool MT4155SP Microwave Oven
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Sanyo Microwave EM-S3586WY not functioning need
follow this steps and fix it. God bless you

  1. Inspect the power cordUnplug the power cord and check for voltage at the outlet. Also inspect for damage, shorts, or burn marks that can be a possible safety hazard.
  2. Bad door switchIf your microwave does not work at all and you know everything is plugged in properly and the outlet is functioning, then also check the door hooks and the door release button. Using a volt-ohm meter on RX1, check your terminals. When your microwave door is closed you should have a reading of zero. Once the door is open the reading should change to infinity. If these readings do not match up, replacement of the door switch is necessary.
  3. Blown fusesTo determine if your fuse has blown out, which may attribute to your microwave not running, you need to pull the fuse out using a pair of fuse pullers. Lay it down and using a volt-ohm meter on RX1, check both ends of the fuse in question. If you do not get a reading of zero, then you will need to replace the fuse.
  4. Bad fan motorLocate the fan and remove the leads. Again using the volt-ohm meter on RX1, check the terminals. If an infinity reading is displayed, it means that the fan has gone bad and requires replacement.
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Oct 24, 2013 • Microwave Ovens
0helpful
1answer

GE microwave oven model#JVM1441BH04 when you close door on switch activates and oven comes on. Only goes off when door is opened.
HELLO.

the problem your are experiencing with your microwave oven is a failed interlock switch.
Be careful when closing your microwave door. Slamming the door too hard is one of the main reasons that the interlock switch is damaged.

Slamming the microwave door shut can easily blow the microwave fuse, but they can also blow due to problems with the interlock switches.
A microwave oven will not function until the fuse is replaced.

Instruction on how to replace fuse on microwave.

1. Unplug the microwave from the electrical outlet to prevent electrocution. Place the microwave in a well-lit area to be able to locate the fuse.

2. Use a screwdriver to remove the outer cabinet of the microwave, and follow the power cord to the fuse. The fuse is located 2 to 3 inches within the microwave and is attached to the power board.

3. Observe the fuse to determine if it is blown. Blown glass fuses will produce burn marks on nearby surfaces, or the internal fuse wire will be black and melted, while ceramic fuses show no outward appearance of being blown.

4. Determine if a ceramic fuse is blown by testing it with an ohmmeter. If the ohmmeter reads zero ohms, your fuse is not blown. Other readings on the ohmmeter show that your fuse is blown.

5. Replace the blown fuse by popping it out of its holder, and snapping a new fuse in its place. Tighten the fuse clips by squeezing them together with your fingers.

6. Replace the outer cabinet of the microwave, and plug the microwave back into the electrical outlet. Test the microwave to see if it's working properly.

thanks.
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Sep 22, 2011 • GE Spacemaker JVM1640SJ Microwave Oven
0helpful
1answer

I have a microwave hood combo - kenmore. the power goes out when i open the door or closes it, then it comes back on -
Hi and welcome to FixYa, I am Kelly.
You have a bad door interlock switch or bent switch actuation arm. Should someone open the door while the microwave is operating without pressing pause/stop when the unit has this symptom will cause the internal fuse to blow and it will not operate until the fuse is replaced. The switches are inexpensive but takes someone with some reasonable mechanical skills and knowledge of using a meter to isolate which of the 3 door interlock switches is causing the problem.
Thanks for choosing FixYa,
Kelly
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Mar 02, 2011 • Kenmore Microwave Ovens
2helpful
1answer

I think fuse is gone????? Any help???????
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.

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 (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.

For more help from Emerson visit here or get help using your appliance at 1-800-898-9020. Get help locating a servicer or parts at 1-800-695-0098.

Many Emerson microwave manuals are available for free download here.

We're happy to help you and we'd appreciate your thoughtful rating of our answer.
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Jul 27, 2008 • Sanyo EM-Z2100GS Microwave Oven
0helpful
1answer

Sanyo microwave EM-S1065S stopped working completely
Does the inside light come on when the door is opened?

If not, then I'd say the internal fuse or thermal cutout / thermostat has failed.

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

We're happy to help and we appreciate your thoughtful rating of our answer.
Read full answer
Jun 03, 2008 • Microwave Ovens
0helpful
1answer

Sanyo EM S8000-w microwave range quit..fuse?
If you or a friend decide to work on it, 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

A microwave can be dead for many reasons.

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.

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

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

We're happy to help and we appreciate your thoughtful rating of our answer.
Read full answer
Dec 14, 2007 • Sanyo EM-S9000 Microwave Oven
0helpful
2answers

Sanyo over the range microwave
I would say the internal fuse or the thermostat / thermal cutout failed. That may be an indication of other problems, such as a bad door switch, bad magnetron, etc. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
Read full answer
Sep 03, 2007 • Microwave Ovens
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