Question about Amana HDC21 Microwave Oven

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Fuseholder melted overdrawing amps and not heating amana hcd18sd

The top of the fuseholder (not the cord side) was melted. Im a novice with microwaves but work on all kinds of kitchen eqipment there was slight discoloration on the top magnatron connections (well the silver square box on top) thanks for the help

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FUSEHOLDERS MELT ON MICROWAVES ALL THE TIME its the most common thing that makes the microwave die 99.9% of the time its nothing , something to do with the metal that is usedin the fuseholder , and the fuse .with a long run of the oven the fuse gets hot and the fuse melts inside . sometimes you can get away with a little contact cleaner on the holder and a new fuse . other times you will need a new fuseholder too. good luck

Posted on Jan 23, 2009


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Hi got a microwave and its stopped heating up.

HI. Your symptoms are a strong indication Magnetron failure. This is the principal heating device, that is used to produce microwaves that , essentially, excite the water molecules in the food, thus, producing the heating effect. When this device fails, generally, the unit will run, but not heat. This device is very fragile, and can injure you if you are not qualified to handle this type of component. There is a High Voltage Capacitor, that is used to help provide the necessary current for optimal Magnetron operation. This capacitor must be discharged correctly. If not, you could risk serious injury, during the repair, if it is accidental touched.

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A loose connection can also result in heat and melting.

I would recommend replacing the section of wire that's melted. You need to make a good solid connection with proper wire nuts and solid crimped connectors.

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Yours may have the revised circuit. You can see the "mini-manual" for that version here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, & testing.


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.

You can find links to helpful exploded view diagrams and part ordering help here.

I'd recommend that your bookmark this link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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