Question about Westinghouse WST3504 Microwave Oven

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WST3507SS ACCDENTALLY ENTERED FOIL, CAUGHT IN 5 TO 7 SEC. ARCED AGAINST DOOR MELTED NICKEL SIZE SPOT ON INSIDE SURFACE STILL WORKS. NOW GETS STEAM IN BETWEEN DOOR GLASS. IS IT DANGEROUS? SHOULD IT BE REPLACED?

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Heat: I placed a microwavable food product in my sharp carousel r-1505. there was a tiny piece of the foil still attached to the rim of the product container. upon start, the foil immediately caught...


Maybe. The presence of metallic material (foil, stainless steel silverware, etc.) in an operating microwave oven creates electric arcs between the foil and the inside wall of the oven. And this can destroy the electric components.

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The magnetron is getting to hot and will eventually fail, especially when it is arcing, "a safety issue convern" the cause is the part mentioned above, or there is exposed metal on the inside cavity.

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Whirlpool gold GT4175SPS-2 inside door paint is flaking and revealing metal. Is it safe to use?


Hi,

Scratches, flaking and bare spots are fairly common, but should be addressed as soon as they arise so the corrosion will not spread and arcing does not occur.

Unplug the power cord first.

Take some mild sanding cloth or scotchbright and clean the bare and rusted areas in the microwave. Use appliance touch up paint to re-coat the surface. You can find the touch up at most anywhere that sells appliances, it comes in a plastic bottle similar in appearance to fingernail polish, yes it does have a brush inside.

Let it dry per the instructions on the bottle or 24 hours if not specified.

May 09, 2010 | Microwave Ovens

1 Answer

Rust colored spots appearing between the glass panels in the door of our over the stove Microwave, model #MH6140XKQ


You first want to be sure your hood vent exhaust fan is working properly, that your grease filters are not clogged, that your charcoal filter (if equipped) is being changed every 6 months or whatever the owner's manual recommends, and that your exhaust duct work and outlet are not blocked.

You can also download the installation instructions from the link above and they will help you in checking the ducts and outlet.

If they're all okay, to prevent future moisture buildup, I recommend wiping the condensation off the walls and inner door surfaces after cooking, and leaving the door open a while to help it dry out further.

Plus I always recommend that you use the hood exhaust vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and the door panels.

Once troubleshooting and prevention are covered, then you can clean and repair the inner door surfaces.

You have to separate the door panels (as shown in the attached photo) and then you'll see the previously hidden screw(s) you need to remove.

Or you can watch a YouTube video (not a video I made) that demonstrates how it's done.

You can also find helpful exploded view diagrams and order parts by entering your full model number here.

If the rust is bad, the area will first have to be sanded smooth and cleaned and dried thoroughly.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

If the wire mesh screen is damaged beyond just surface rust, it will have to be replaced, as it prevents microwave leakage, which can result in arcing or a fire.

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

door_panels.jpg

Jun 25, 2009 | Whirlpool Microwave Ovens

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I accidentally covered a plate with foil in the microwave. there was Arcing (no fire) and now there is black marks etched where the foil touched the sides. The cavity seems unharmed though, it seems if I...


Sometimes the arcing itself will cause black marks inside the oven. The places where the foil was melted, (touching), likely left small metal deposits, possibly now, impregnated in the surface. It is important to remove these if possible to avoid further arcing. Remove these then test to make sure the oven is functioning properly. If so, continue to use.

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Do not put any metallic objects or substances in side the oven . It will produce arcing inside the oven. Take care in future.

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1 Answer

When the oven is cooking for over 5 mins part of the door goes a white opaque colour inside the door, it is as if the seal is broken and steam is getting inside the door itself.


That's probably what's happening, but it's not dangerous as long as the internal cooling fan is running and the screen / mesh between the door panels is not arcing or rusting.

It's suggested that you leave the door open for a few minutes any time you cook and notice a moisture buildup afterward.

We're happy to help and we appreciate your thoughtful rating of our answer.

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1 Answer

Electrical arc discharging from the top, inside oven, causing burned spot in top of cooking enclosure


You may be able to repair that with a high quality epoxy.
Just make sure you read the package to be sure the eopxy contains no metalic substances.
I think you could succesfully repair it.

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1 Answer

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check the conductivity of the plastic with an ohmmeter by placing the probes an inch apart on the plastic surface. If the resistance is large or infinity, the plastic probably performs no role in stopping the microwave radiation. If so, any epoxy probably can be used to close the hole safely. Make sure you don't use too much and if possible place tape over the repair and orient the microwave so the epoxy presses against the tape while drying to prevent it from oozing into any door hinge/close mechanism. Otherwise, a piece of microwave door glass from a broken unit can ge glued over the hole and should stop the radiation. You can check for leakage with test units but be very carefuly anyway.

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