Most Popular Parts
These are the most commonly purchased repair parts for NNS251BL.
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This line fuse protects the microwave by shutting down if there is an electrical surge. If your microwave is not turning on, you may need to replace the fuse. This part is just over an inch long, metallic on both ends and white ceramic in the middle. Please remember to disconnect power to your microwave before starting your repair. This is a genuine OEM part.
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This tray rotates in your microwave ensuring more even temperatures.
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This bracket holds the metal or plastic flapper that closes off the exhaust duct when the fan is not running and opens when the fan turns on. If the exhaust fan on your microwave does not appear to be working, the problem may be with the damper assembly. If the damper does not open and close easily, check for any damage to the bracket, and replace if it is damaged or faulty. This genuine OEM exhaust damper measures approximately 12 inches long by 5 inches wide.
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The microwave primary door switch, also known as a micro switch, is normally open. When the door is shut, the door switch will close to send power to the microwave to operate. If the microwave won’t start, then the switch has failed, and the part will need to be replaced. The micro switch is in the latch board section and monitors the position of the door. This part measures 1.5” L x .75” W NOTE: Due to the high voltage capacitor in the microwave, it can retain a lethal electrical charge, even when unplugged. It is suggested to have a service technician install the part. This is a genuine OEM part. Please disconnect the power to the microwave before beginning the repair.