Microwave Model 87720 fuse location

The fuse for the Whirlpool microwave model WMH31017HZ07 is located inside the microwave oven. You will need to remove the outer cover of the microwave to access the fuse. Here are the steps to follow:

1. Unplug the microwave from the power source.
2. Remove the screws on the top of the microwave that hold the top grill in place. Remove the grill.
3. Locate the screws that hold the control panel in place. Remove the screws and carefully pull the control panel forward.
4. Locate the fuse holder on the right side of the control panel. Remove the fuse holder by pulling it out.
5. Check the fuse to see if it is blown. If it is, replace it with a new fuse of the same type and rating.
6. Reinstall the fuse holder, control panel, and top grill.
7. Plug the microwave back in and test to see if the light is working.

If the light still does not turn on after replacing the fuse, there may be another issue with the microwave and it may require further troubleshooting or repair.

The fuse for this model is located on a small filter circuit board located just behind the grill.

I have a video at my site which shows you how to remove the grill (and controller assembly if necessary) on a typical over the range microwave oven.

See microwavecontrol.com and feel free to contact me directly through there if you have additional questions.

The support page for your microwave is here, and you can download the wiring diagram there.

https://www.frigidaire.com/Owner-Center/Product-Support--Manuals/?productCode=FFMV164LS

Although you have not mentioned the model/make, take a look at the video here for replacing a Thermal fuse. Microwave Won Work GE Microwave Thermal Fuse Replacement part WB27X1127

on traditional fuse see
How to Fix Microwave Oven Simple Fuse Replacement

Good Afternoon Friend, that's a great question!

Depending on the model of your Frigidaire microwave, the fuses are typically on located behind the control console, on the magnetron or on the oven capacity. Hope this helps! - Z

Hello

Fuses can be located behind the microwave door or behind a panel either on the interior wall or an exterior panel. Often the fuse will be behind a panel located under the louver vents on top of the microwave

you have to take off the external housing and you will see a glass fuse near the power source.

If the microwave control panel doesn't light up, then your fuse is blown. unplug the microwave. unscrew the vent grill, (2) screws at the top of the microwave. then you should see 1 screw holding the control panel. after removing that screw, gently push up then out. there should be a metal plate on top of the control panel. remove that plate and the fuse will be in that opening. remove the fuse and check for continuity across the fuse. Replace fuse and microwave should begin working.

We have here below the link with the parts layout of your microwave
oven model. The fuse is part no 15 Line fuse

Part Number: AP3119665
made by WHIRLPOOL

Which as you can see is
located in the internal control parts area.

http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5168435&diagram_id=28370772#d28370772

The fuse is located inside the microwave. You will need to remove the front panel to get to it. It will be located on the black power wire inside the microwave and installed inline. Make sure that the microwwave is unplugged before removing the front panel. Once you locate the fuse inside you will need to remove it and test it with a continuity tester to see if it is blown. If it is make sure you replace the fuse with the same amp rating you found. If the new fuse blows again then there is an electrical short somewhere inside the microwave.

Yes most of them do, take the outer casing off, should be located either were the power supply is or the control module is,