Question about Jenn-Air JMC8130DDS Microwave Oven
The Jenn-Air microwave model JMC8130DDS light bulb needs to be replaced but I don't know how to get to it.
The fuse holder may be loose.
With the microwave unplugged, if you can easily turn the fuse with your thumb & forefinger while it's in the holder, it has overheated and fatigued and should be replaced.
Simply squeezing its terminals together with pliers is not really a good solution.
When a connection is loose, heat results, which eventually melts the fuse internally.
This is usually evidenced by a very tiny ball of solder at the point where the end cap meets the body of the fuse.
You can use a generic holder - it's a lot cheaper than ordering one. The connectors should be 1/4" tabs and it should be rated at 20 amps or better.
You should be able to get one from a home center or local appliance parts store.
If it's not loose, then it may be a failing magnetron or high voltage transformer pulling too much current.
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Posted on Apr 12, 2008
SOURCE: Jenn-Air Microwave - no power
Had the same problem. Removed the unit (snapping off the upper and lower trim rings was a chore but they do snap off) and tested the power. Plug behind the unit was good. Pulled the cover and checked the thermal fuse with ohm meter. No good. Replaced fuse, microwave would run for a second, then light goes dim and it buzzes, then it blew the fuse. Per above suspected Capacitor. Changed that, and we are back up and running. Thanks!!
Posted on Sep 27, 2008
SOURCE: jenn-air microwave dead
I'm afraid since Jenn Air has become a division of Whirlpool (along with numerous others) the quality has suffered.
I was going to suggest that you purchase a service manual for your unit so you could 'reset' it yourself. Service manuals can cost from $12-$40 US and in many cases obviate the need for 'professional' service calls. However, I couldn't find one offered for your model number so your only choices are to continue to pay for 'service' or examine the guts visually to see if you can locate any reset feature. This is what I would do.
When microwaves fail, older ones generally need a diode, a big capacitor or the magnetron replaced. Newer units are suffering power supply failures as many have moved from the reliable but less efficient 'linear' power supplies to 'switched mode' types that are more efficient but more complex and prone to failure. These later types usually have the word 'inverter' in the model description.
Posted on Jan 04, 2009
should be a "mini-manual" (tech sheet) hidden inside the unit
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.
If not, try here.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
If the fuse is good, it may be the magnetron thermal cutout (TCO or thermostat) or the oven cavity thermal cutout (TCO or thermostat).
Feel free to contact me directly (and please remind me of your full model number) for more information & help.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
William E. Miller
Posted on Jan 09, 2009
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