Question about Kenmore 63662 / 63664 / 63669 Microwave Oven

1 Answer

Microwave heats but slowly.

Kenmore Elite Model 665.61682.
Microwave heats in about twice the normal time. Magnetron and it's thermostat resistance check out okay. House voltage at receptacle is 120V. No repair codes come up. Keyboard check is okay. Capacitor?
Thanx

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  • 4 more comments 
  • duckduck Jan 22, 2008

    I have a 63689 model which I can't find ANYWHERE. I have the same problem. Takes twice as long to cook anything.

  • duckduck Jan 22, 2008

    Seems like JB-Buckeye and Orchestra have the same problem I have. I responded but forgot to add that last night I got an F9 code which means a door switch issue. It ran for about 20 minutes and kept shutting off. The outside of the unit seemed unusally warm. Once it cooled the code went away and it started working but still took twice as long to heat.

  • duckduck Feb 05, 2008

    Anyone out there?

  • duckduck Mar 04, 2008

    This is the second time I have asked a question on this site and the second time I got no response. These questions are over a month old and actually pushing two months from the start of the thread. Your experts suck.

  • duckduck May 11, 2010

    Anyone out there?

  • duckduck May 11, 2010

    JB-Buckeye and duckduck are waiting for a response. The post board says there are two solutions but they are actually just me having the same problem. Thanks everyone,

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This is the second time I have requested assitance on this site with no response. The beginning of this thread dates back two months. Why would I ever want to pay for support when it is so poor at this level?

Posted on Mar 04, 2008

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1. You will need to uninstall the oven from over the range in order to replace the part (you will need to do this anyway, if you decide to buy a replacement oven).

2. Ensure the oven is UNPLUGGED before servicing anything inside the cabinet and remove the exterior case in order to access the magnetron. There are several websites that you can use that illustrate how the oven is assembled:

searspartsdirect.com
pcappliancerepair.com appliancepartspros.com Repairclinic.com is another site that is a great parts resource, but usually doesn't have a well defined component breakdown illustration.
NOTE: If you've never repaired an appliance on your own before, a microwave oven is usually not a recommended appliance to start with. Some models can be rather involved in taking apart.

3. The magnetron replacement cost will depend upon the model number, but generally costs around $100.
4. Some model microwave ovens have a thermal cut-out (TCO) associated with the magentron circuit, and/or oven cavity. If these small thermostats trip, they usually shut-down the entire oven. The lights would not work and the carousel would not turn. You will need to remove the thermostat from the oven (if equipped) and take a resistance check across the component terminals to determine if it is good or not. A low resistance reading indicates a good thermostat. An infinite reading, indicates a blown thermostat and needs to be replaced. The average replacement cost is about $10. I would recommend you check any fuses associated with the oven before assuming the magnetron has failed.
Review the parts illustrations at the recommended websites to identify and locate parts, and to see if this is something that you may be able easily take apart and reassemble.

If you have any questions, please post back with your complete MODEL NUMBER and let me know. I hope you find this information helpful.



CAUTION: DO NOT operate a microwave oven with the exterior cover off. The voltage inside the High Voltage network where the magnetron is installed can exceed 3,000 volts!

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It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARRAMOUNT

This is a job for a professional but if you are safety clued up, here's instruction.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

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1 Answer

Light goes on, turntable rotates, time on displays counts down as per setting -- but no cooking. Nature of problem??


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1. You will need to uninstall the oven from over the range in order to replace the part (you will need to do this anyway, if you decide to buy a replacement oven).

2. Ensure the oven is UNPLUGGED before servicing anything inside the cabinet and remove the exterior case in order to access the magnetron.
There are several websites that you can use that illustrate how the oven is assembled:
searspartsdirect.com pcappliancerepair.com appliancepartspros.com
NOTE: If you've never repaired an appliance on your own before, a microwave oven is usually not a recommended appliance to start with. Some models can be rather involved in taking apart.
If the model number you posted this question under is correct, the magnetron replacement part number is WB27X10682. NOTE: This model also has two internal thermostats that, if tripped, could give you the same symptoms. The thermostat acts as a fuse if the oven cavity or magnetron overheats. The part numbers are as follows: Cavity Thermostat: WB27X10683 Magnetron Thermostat: WB27X10567 You will need to remove the thermostat from the oven and take a resistance check across the component terminals to determine if it is good or not. A low resistance reading indicates a good thermostat. An infinite reading, indicates a blown thermostat and needs to be replaced.
I would recommend you check both thermostats, first as the replacement cost is much less than the magnetron.


Review the parts illustrations at the recommended websites to see if this is something that you may be able easily take apart and reassemble.
If you have any questions, please post back and let me know. I hope you find this information helpful.
CAUTION: DO NOT operate a microwave oven with the exterior cover off. The voltage inside the High Voltage network where the magnetron is installed can exceed 3,000 volts!

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1. You will need to uninstall the oven from over the range in order to replace the part (you will need to do this anyway, if you decide to buy a replacement oven).

2. Ensure the oven is UNPLUGGED before servicing anything inside the cabinet and remove the exterior case in order to access the magnetron.
There are several websites that you can use that illustrate how the oven is assembled:
searspartsdirect.com pcappliancerepair.com appliancepartspros.com
NOTE: If you've never repaired an appliance on your own before, a microwave oven is usually not a recommended appliance to start with. Some models can be rather involved in taking apart.
3, The magnetron replacement part number for the model you have listed is 6324W1A001H. The average cost is about $42. NOTE: This model also has a thermostat that if tripped, may also cause the same symptoms. The thermostat acts as a fuse if the oven cavity overheats. The part number is 6930WRT002F. You will need to remove the thermostat from the oven and take a resistance check across the component terminals to determine if it is good or not. A low resistance reading indicates a good thermostat. An infinite reading, indicates a blown thermostat and needs to be replaced. The average replacement cost is about $5.
Review the parts illustrations at the recommended websites to see if this is something that you may be able easily take apart and reassemble.
If you have any questions, please post back and let me know. I hope you find this information helpful.
CAUTION: DO NOT operate a microwave oven with the exterior cover off. The voltage inside the High Voltage network where the magnetron is installed can exceed 3,000 volts!

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(((The fuse is located inside the unit along side the magnetron)))

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I would be sure to check the microwave's outlet under a load.

One good way is to use a toaster or hair dryer for about a minute to see if they run at full power and run without their heating elements dimming.

If the power at the outlet is steady, I would suggest a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If it still fails to heat properly, I would say you have a failing magnetron, and it would just be a coincidence that the failure began after the new wiring was installed.

If you need to order the magnetron, Sears sells it for $73.13, but you can get it for $41.84 here.

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

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