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Sample Model Number Tags
Model numbers can be made up of numbers (1005400, for example) or a combination of letters and numbers (LAT1000AAE). The model number will most likely appear on either a paper sticker or a metal plate. Your appliance's model number tag may look similar to the sample model number tags shown here (model number highlighted in yellow):
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This 40w light bulb is a replacement bulb constructed of glass and metal. It is an easy-to-install electrical part which produces 40w of light. If the bulb won't light up then it may be broken and sho...
This Charcoal Filter traps grease from your oven's exhaust to help prevent it from entering the vent, which could cause damage over time. If the exhaust fan on your microwave is not working, you may n...
This Grease Filter is constructed of Acrylonitrile Butadiene Styrene and is used to trap grease and help eliminate odors from the exhaust air while cooking. It attaches onto the exhaust and is rated ...
This turntable ring in your microwave makes sure that your glass tray rotates smoothly. Located just above the internal floor, it supports the tray so that your food cooks evenly. A broken turntable r...
The glass turntable tray rotates food in the microwave to ensure even heating. Designed for compatibility with specific models, it provides a stable surface for cookware. Check fitment before ordering...
This mounting plate is sourced directly from the original manufacturer for use with microwaves. It is a metal plate designed to support a microwave by attaching the microwave to the wall studs. If the...
This three-terminal switch fits your microwave door. This part is mostly black in color and is about 1.5 inches with metal terminals. You might need to replace this part if your microwave is not heati...
This door interlock switch is a genuine replacement part designed for use in microwaves. It serves a critical safety function by preventing the microwave from operating when the door is open. Because ...
This diode, or high voltage diode, is used in microwaves. It is an electrical current control device that ensures power flows in one direction and not the other way. If your microwave produces no heat...
If your microwave is not turning on it could be due to your fuse needing to be replaced. This part protects the microwave by shutting it off if there is an electrical surge. This fuse is just over an ...
The light socket in your microwave houses the light bulb and connects it to the power source. The light bulb will screw into it, so the light bulb will be held in place. Be very careful when installin...
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2 questions answered by our experts.
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Randy
March 19, 2025
Microwave has power but sparks when trying to heat item. Only sparks for a second then nothing does.
For model number WMH53520AS1
Hi Randy,
Thank you for your question. Sparks can occur if metal objects are placed inside the microwave, or if the microwave is damaged inside. Also, if the magnetron and diode are defective and not working properly, they will spark. Before removing and inspecting the magnetron and diode with a multimeter on the Rx1 setting, unplug the microwave from the electrical outlet. Before checking these parts, you will also need to release the charge from the capacitor. We have included a link on how to release the charge. When checking the magnetron, touch the probes to the terminals, this should produce a reading of two to three ohms of resistance. Next, move one probe to touch the metal housing of the magnetron. This test should not indicate that continuity is present. If the results of your test do not match the results above, you will need a replacement magnetron. When testing the diode, touch the probes to the terminals. Next, reverse the probes to check for continuity in the other direction. You should receive a reading that shows continuity in one direction, but not the other direction. If your diode does not show continuity, or shows continuity in both directions, you will need a replacement high voltage diode. We hope this helps!
The nightmare was that this microwave is installed under the cabinet....in order to get to the light bulb I had to pull out my stove then squeeze into the space between the stove and counter....my old microwave light bult was much easier to change.....Shame on Whirlpool for making this so difficult.....must be a better way to cover the li
... Read moreght bulb so that we do not need a screwdriver to remove the door to get to the light bulb
Ordered top & bottom micro-switches and mounting plate parts. Internet reviews could not find specifics if the issue was due to a top/bottom or combination of micro-switch or mounting plate failure. Pulled the plug. Removed the top vent assembly cover held in by 2 Phillips screws inside the vent. Removed the control panel held in by 1 P
... Read morehillip screw at the top vent assembly area. Lifted control panel upward to release the catch and moved it off to the side - didn't disconnect any leads. Used a Torx bit to remove the door switch mounting plates at the front and pulled the plates through the opening from the control panel. Documented the wire color code connections, the top plate uses 2 micro's with one using both the closed & open contact. Installed the respective micros on the mounting plates and worked backwards with the wiring and removal steps. Once completed, the open/close sensing has worked every time.
