Question about Microwave Ovens

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MICROWAVE FUSE BREAKDOWN

EVERY TIME ICHANGE fuse of microwave , it does not work, what is the reason, and eveything work properly

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  • Microwave Ovens Master
  • 12,223 Answers

Follow this test and fix it. God bless you

  1. Inspect the power cord Unplug 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 switch If 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 fuses To 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 motor Locate 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.

Posted on Nov 27, 2013

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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fridgetech
  • 473 Answers

SOURCE: Matag Microwave MMV5100AAB

There is a short either in the keypad or the power board.  Unfortunately parts for this one are not available anymore.  If you could get the parts it would cost you well over $100 and would be a better idea to replace the microwave.  If this only happens when you add time then I would just use the microwave without using that option.  Would appreciate a solved rating for expert advice.

Posted on Oct 27, 2007

MicrowaveSvc
  • 9098 Answers

SOURCE: neff h7871

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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


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

Posted on Jul 06, 2008

MicrowaveSvc
  • 9098 Answers

SOURCE: GE Dual Wave II microwave oven blowing fuse

It sounds like a shorted high voltage capacitor, a fairly cheap fix. But if it's good, I would suspect the high voltage transformer.

Here are some links you or a friend can use for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/xformer.html

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Sep 06, 2008

  • 1 Answer

SOURCE: Microwave stopped working while cooking. Is there a fuse?

If unit is built-in reove screws holding unit to cabinet.
Slide out about 2 inches to access 3 screws holding grill.
Remove grill to get to two screws holding control panel.
Fuse is behind control panel,

Posted on Mar 17, 2009

najah
  • 180 Answers

SOURCE: Microwave has stopped working after being run empty for a short time. Is there a fuse that needs to be replaced or is the microwave dead?

There is a fuse inside the oven. The rating of the fuse may be 8amps. It is not suggested to run the oven without load inside.

Posted on May 04, 2009

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1 Answer

Has stopped working. light gone off at same time. plug fuse has not broke. any ideas ?


There is a fuse inside the microwave also.It is a ceramic fuse,usually 15A.It has to be replaced with another ceramic fuse of the same rating.Bear in mind,the fuse blew for a reason,so if it is the interior fuse replace it after a search for a fault.

Dec 17, 2014 | Microwave Ovens

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Whirlpool ukm120 microwave stopped working


1) you use contacts cleaner with very speed dry or isopropyl alochol to 100% for dry the humidity sector inside from microwave.+power cord+main switch. The reason is has humidity. This water or some other liquid are NOT conductors.by that reason isolated. See if some parts are burned or smell strange.
2) test the fuse again. 3) dry the HV transformer and magnetron with infrared LAMPS by 8-10 hours for to dry any humidity.
3) and try again.see the inside of microwave
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Jul 26, 2012 | Microwave Ovens

1 Answer

My Microwave is not working


Without other information, sometimes the fuse blows due to interlock switches. There are usually three or four switches that are activated by the microwave door. If any of the switches are not working properly, the microwave will not turn on.

Dec 30, 2011 | GE Microwave Ovens

1 Answer

Eveything seems to work on this unit but it doesnt heat the food?


Chance is the Magnatron is at fault ,check first replace if need be the thermal fuse....Magnatrons are the main part that goes after some 5 years replacement is quite expensive,cheaper to buy new micro...

Feb 23, 2011 | Kenmore Microwave Ovens

1 Answer

Microwave turns on everything works but is not heating up food what can I do, I am a license electrician is there a fuse in side?


Yes if you remove panel you will find a capsule with a ceramic fuse inside so you can check it out.
Many times the fuse blown out from long time use, however if it will blow out you need to check what was the reason for bowing the fuse.

Sep 28, 2010 | GE XL1800 1100 Watts Microwave Oven

1 Answer

There's no high voltage ,thus no magnetron activity


check the ceramic fuse in the primary circuitry as it probably blew out when the primary connection arced and burned through

Mar 23, 2010 | Magic Chef MCD1110ST Microwave Oven

2 Answers

I have the Kenmoore Microwave Hood 721.80402. During this last wave of storms, I was without power for 2 days. Once the power was restored, the microwave will not work. Everything is plugged in and the...


You might try pulling the plug on the unit and leaving it overnight. The electronics may have locked up due to irregular voltage during the failure. There may also be a GFI (ground fault interrupter) on that circuit that has tripped for the same reason. Check the kitchen outlets for a tripped GFI.

Feb 14, 2010 | Kenmore 62622 Microwave Oven

2 Answers

Will not heat food eveything works but will not heat


Hi,
The device which emits microwaves and heats the food is called a magnatron. You will have to take it to a repair shop to determine if the magnatron is faulty. Also check all internal fuses and/or loose or burnt wires before sending it in for repairs.
Best wishes,
Graemevm

Dec 23, 2009 | LG MV-1444Y Microwave Oven

1 Answer

Will not heat anything


This is not lock child feature, you reset lock child uunplugging power.

Test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.

If it additionally does not spin and no light, then check also the door switch and fuse.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts. (here in UK).

Apr 07, 2009 | Goldstar MV-1501 Microwave Oven

4 Answers

Everything works except the microwave? could it be a fuse


There must be a fuse on the MW control board.

Feb 18, 2009 | Microwave Ovens

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