Question about Sunbeam Microwave Ovens
Clock, timer, light, sound works, but does not heat after ~1 yr.
Place a glass pie plate in the oven with about 1/8" deep water in it. Turn the oven on high for about 30 seconds. If you get one small spot with intense boiling, the stirring antenna at the top of the oven is not rotating. It's usually driven by a small 60 RPM synchronous motor. To get at it, look for a pull-out plastic locking pin that holds the plastic dome or plate to the tope of the oven cavity. You may need to rotate the cover counter-clockwise a fraction of a turn to unlatch it. Sometimes greasy food vapor gets in there and gums up the bearings. Clean very thoroughly, but be careful not to bend the antenna blades. When you reassemble, make sure the antenna is properly seated in its bushing and engaged on its drive shaft. Repeat the test to see if you have even heating.
If you see no evidence of heating anywhere in the oven, check to see if the door switch in series with the transformer is malfunctioning. If the door switch is OK, you'll need a high-voltage measurement probe to determine whether the magnetron has failed, or (more likely) the high-voltage capacitor or diode is bad.
Posted on May 21, 2014
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Posted on Jan 02, 2017
With the symptoms you
have, I would most strongly suspect a shorted high voltage rectifier
diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.
The diode is a fairly cheap fix, and your magnetron is still under the part warranty, but you would have to pay labor.
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the 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.
Here are some links you or someone you know can use for test help, but read their safety warnings first:
(if it's not shorted or burned, it's probably okay)
If within the magnetron portion of the warranty (5-9 years) but out of the original full warranty (1 year), the manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.
If nothing else, you can save about $50-75 if you remove it from the wall and take it to a Whirlpool-authorized servicer.
You can find your nearest Whirlpool/Maytag-authorized servicer here.
Accessing some components for testing and possible replacement will require you to remove the oven from the wall.
If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.
You can download Whirlpool owner's manuals and installation instructions here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Mar 06, 2009
The light inside the micro wave needs to be replaced most have a door on the back side that yo can remove the screw and unscrew the bulb and take to a applince shop and purchance a new one to replace.
Posted on Jul 19, 2009
SOURCE: I have a GE Spacemaker
If everything works, but the microwave oven does not heat, this is commonly caused by a failed magnetron. The magnetron is essentially, the heart of the oven. This is what produces the RF energy that heats your food.
Here's what you need to determine whether or not its worth fixing:
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. You will need to ensure the oven is UNPLUGGED before servicing anything inside the cabinet. You will need to 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
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 WB27X10305. The average cost is about $80. NOTE: I found the part listed for the best price at appliancepartspros.com at a cost of $76.
You need to decide whether or not $80 and the amount of labor involved is worth the effort as opposed to replacing the entire oven at a higher cost and less labor (other than the installation). 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.
Posted on Aug 17, 2010
Testimonial: "Hi jsrock516 - thanks for your expert information. I don't think this is something we can fix on our own and as you said probably cheaper to replace. "
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