Question about Kenmore Microwave Ovens

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How do I reset the internal fuse in my Kenmore model number 721, which was produced in July of 1995? email: patrick.hegarty@synergyoperating.com

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Typically, the internal fuse is not resetable ... hense they call it a fuse ... not a circuit breaker.

Remove the cabinet and find the fuse on the floor of the oven near where the cord enters the cabinet. Check with a contunity checker.

Don't touch anything that looks dangerous ... like the big silver capacitor.

Thank you for your interest in FixYa.com

Posted on Oct 03, 2010

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1 Answer

Kenmore microwave Model #721-80019401


sears parts direct paste the whole URL below in your browser

http://www.searspartsdirect.com/partsdirect/part-number/Kenmore-Parts/Microwave-Parts/3651W1A022B/0022/721/Model-72180009401/0582/0123370?keySuffixId=&pathTaken=partSearch&pathRender=modelComponent&documentCompId=50026727&diagramPageId=00001

Aug 28, 2014 | Microwave Ovens

1 Answer

What if reset button on back doesn`t fix problem,what`s next to try? no lights no power


No power at all would point to a breaker or fuse for the power. You would have to open the back to have a look and test for voltage.

Jul 26, 2014 | Kenmore Elite Microwave, Model...

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Kenmore microwave oven model 721


Hi,
On the link below is the list of Kenmore microwave oven model manuals starting with 721.Click on selection to download.

www.managemylife.com/mmh/owner_manuals/search?query=Kenmore+micicrowave%2Fhood+combo+-+7218924680

Hope this helps.Thanks!

Jan 07, 2012 | Microwave Ovens

1 Answer

Microwave electrical problem


Unplug, take all the screws out from around the case. Remove case. There is a fuse inside (Without Model number I can't tell you right where it's located) It looks like one of the old round car fuses only it's white colored. It's made of ceramic. Replace it and put unit back together. This is a common problem when one does what you are saying yours is. Be thankful that's all, if you had anything working it would be something major and would be cheaper to replace unit if it a counter top model.
  • NOTE: DO NOT REPLACE WITH CAR FUSE. USE ONLY MICRO WAVE FUSE.
Please rate solution

Sep 05, 2009 | Kenmore Microwave Ovens

1 Answer

F9 err cd on Mod 721-80869400 be caused by metal tray in micro?


The F9 error code indicates a failed inverter. If resetting the unit does not help you will need to have the inverter & harness checked.


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This can sometimes by caused by a power surge or glitch through the electrical lines.
You can sometimes clear this fault by completely unplugging the microwave for 1 minute.
Plug it back in and see if the fault code returns.
If it does, then you have an internal component failure that will need to be serviced by a technician.
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances.
Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged.
A microwave radiation leakage test must be performed on the unit following any internal component repair.

It does not ALWAYS indicate a inverter control board problem however in other brands/models.
LG's service manual (for an example) suggests the f-9 code could be due to line voltage, magnetron, inverter module, "Relay2", or a loose connection between door/magnetron/control pcb.
Other indications might help narrow down these choices before having to pull out your multimeter and crack open the microwave case.
For example, if the microwave works, but heats slowly, then the troubleshooting manual narrows your choices down to magnetron or line voltage problems, and pretty much rules out the other possibilities.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Aug 24, 2009 | Kenmore 63792 Microwave Oven

2 Answers

Microwave Won't Heat Food


My Kenmore 721.63259301 would not heat items up so I came here and saw the parts required and was just about to order them when I checked the online owners manual and found this. FULL FIVE-YEAR WARRANTY ON
THE MAGNETRON For five years from the date of purchase, if the
magnetron in this Kenmore microwave oven
fails due to a defect in material or workmanship,
Sears will repair it free of charge.
My microwave has a manufacture date of July 2009 so I will be taking it right to the closest Sears repair center for a free repair. I suggest everyone do the same.

Aug 18, 2009 | Kenmore 63792 Microwave Oven

2 Answers

Internal light does not come on


Relay RY1 on the control circuit board has probably failed.

It's the relay closest to connector CN1, the 7-pin connector.

Have you had trouble with the cooktop lights of hood vent exhaust fan recently?

We regularly repair such control units for customers nationwide by mail for $39.95 postpaid in about a week with a one-year guarantee.

Feel free to contact me directly (and please remind me of your full model number 721.62644200) for more information & help or see our Web site.


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

William E. "Ed" Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com


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Feb 14, 2009 | Kenmore 62622 Microwave Oven

1 Answer

Kenmore microwave #721-89941-1490


There is an internal fuse, plus one or two thermostats or thermal cutouts.

You can probably find an exploded view by entering your FULL model number here: http://www.searspartsdirect.com

There may also 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.

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.

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

Jun 26, 2008 | Kenmore Microwave Ovens

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