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There is a tear in the waveguide cover. Is this dangerous?

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9047 Answers

SOURCE: Waveguide cover

If it's damaged and cleaning won't take care of it, you can buy a new waveguide cover from Tritronics at http://www.wehaveparts.com

We have the full service manual at our site for your convenience:
http://www.microwavedisplay.com/r820bc_bk_bw_sm.pdf

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

Posted on Feb 09, 2008

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kapishtech
  • 2272 Answers

SOURCE: There is a tear in the waveguide.Is this

yes yes yes .its dangerous. You will have to replace the waveguide cover. or just cut to size using your old waveguide as a template. ------ You can oder replacement wave guide cover from the link below. Just click on the link:--- http://shop.ukwhitegoods.co.uk/Microwave%20Spare%20Parts/Universal%20Microwave%20Items/RL75101%20Universal%20Microwave%20Waveguide%20Cover.html --------- There is pone more link from where you can order the parts.Please click on this link:--- http://www.partstore.com/Sitemap/Sharp/Sharp/Carousel+microwave+parts.aspx --------- Its simple to replace the cover; it just slides right underneath the tabs inside. -----------

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation

Posted on Sep 27, 2010

jsrock516
  • 5911 Answers

SOURCE: I REQUIRE A WAVEGUIDE COVER REPLACEMENT SHARP

Here's a link to the parts listing at searspartsdirect.com:

http://www.searspartsdirect.com/partsdirect/part-model/Sharp-Parts/Microwave-Parts/Model-R120DK/0958/0123245?searchedModel=r-120d&blt=

The list also includes helpful schematic diagrams that you can print for future troubleshooting.

if you need further assistance, please post back and let me know. I hope this helps you.

Posted on Nov 03, 2010

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How to fix a KitchenAid sparking Microwave


Get rid of it and buy a new one. This sounds like a dangerous item to continue to use.

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Sparks inside a wolf mw24 inside in right wall cover plate


The right side wall cover plate is the "waveguide cover."

It protects the waveguide and the magnetron at the other end from moisture, grease, and food particles.

If these remain stuck to the waveguide cover, arcing can occur, which will damage and / or destroy the cover, the waveguide or even the magnetron or the oven chassis.

As with most problems, this should be addressed sooner rather than later or it will only get worse, and may become unrepairable.

The similar Sharp model R-530E-series service manuals are here and here. They will help with disassembly, but the external / cosmetic parts will not interchange.

The Wolf waveguide number is 801798 and Wolf part ordering information is here.

The oven cavity and waveguide must be clean and if any spot is scorched or chipped, it must be sanded smooth, cleaned and dried, then touched up with appliance paint, available from local big box stores, home centers, appliance parts stores, and hardware stores.

Leave the door open overnight to dry the paint. Then install the new waveguide cover.

If the chassis or waveguide have holes in them, the oven must be scrapped and replaced.

For more free DIY and other help & advice, feel free to contact me via my site.

Please include FULL model number*, FCC ID number*, + detailed symptom information. ( * on the tag in cooking cavity or around door frame or control frame or on back)

William E. Miller, AS-EET
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
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Dec 05, 2016 | In Microwave Ovens

1 Answer

Dacor DMT2420S


That would be your waveguide cover. If damaged or discolored, the waveguide cover has been damaged by heat and must be replaced.

It protects your waveguide and magnetron from arcing due to grease and food particles.

The area of the waveguide behind the waveguide cover should be clean, and if rust or flaking is present it must be sanded, then repainted with high temperature appliance paint.

For Dacor model DMT2420S, the waveguide is part number 66345 and you can get it from The Pros here for $11.07 (subject to change).

The service manual is at my site here: http://www.microwavecontrol.com/dmt_2420_sm.pdf and the part list is here: http://www.microwavecontrol.com/dmt_2420_parts_list.pdf.

Feel free to e-Mail me at pupista@gmail.com if you need more free advice.

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Can you replace the waveguide in a model NN-SN756B Panasonic microwave oven?


Generally, there are no user serviceable parts in a microwave oven due to the dangers of exposing yourself to microwave radiation. There are special screws that can only be removed by technicians who have the right tool.

However, I did find this.

Microwave Oven Repair Guide Replace wave guide cover

Oct 28, 2015 | Panasonic Microwave Ovens

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Kenmore ken gtal17 waveguide cover tear


safety first have it repaired properly to be safe

Aug 18, 2012 | Microwave Ovens

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Is it dangerous to use the microwave without a duct cover


Yes, the waveguide (duct) cover protects the waveguide and the magnetron from damage caused by grease and food particles getting on them.

The waveguide cover (also called a spatter shield) is usually about the size of a playing card and often held in place by a plastic rivet.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If the area is charred or chipped, the area will first have to be sanded smooth and cleaned and dried thoroughly.

If the cavity metal of the oven is cracked or split, you can use a small amount of steel-based epoxy such as JB-WELD to patch the crack or hole.


Once that dries thoroughly, you can sand it very smooth.

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

If your waveguide cover is burned, it will need to be replaced.

It provides critical protection for the magnetron.

You can order a new waveguide cover form
Encompass here.

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

Jun 06, 2011 | Sharp R-216 800 Watts Microwave Oven

2 Answers

Microwave is 6 months old. clock won't light up. when i try to set cooking time the inside starts making a clicking sound and a light flashes in the top right inside


Sounds like the waveguide cover has been contaminated with food that has carbonised and burning.
Call a Whirlpool repair agent and get the waveguide cover replaced.
They need to be kept clean and leaving the door open after cooking helps to dry the moisture out in the cavity. Making it last longer.

Jan 23, 2011 | Whirlpool MH1170XS Microwave Oven

1 Answer

Inside the microwave the piece of cardboard looking rectangle has fallen off. is this dangerous


Yes. This is the waveguide cover, and it needs to be there to protect the magnetron from damage.

The waveguide cover is usually about the size of a playing card and often held in place by a plastic rivet or held in a slotted opening.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

If your waveguide cover is burned or damaged, it will need to be replaced.

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

Please write back with your brand and model number if you need further help.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Apr 21, 2008 | Microwave Ovens

1 Answer

Louder than normal noise when using and bad 'burning' smell


You need to stop using your microwave if it's burning. This is a common symptom of a blown magnetron. Using it in it's current condition is not only dangerous, but it will further damage other components in the high voltage circuit and/or waveguide. In many circumstances, damaging the waveguide renders a microwave non-repairable. A new magnetron will cost you around $100 if you wish to repair this yourself. NOTE: I would not recommend working in or around the high voltage circuitry unless you absolutely know what you are doing. Do not attempt to take any live voltage measurements or operate the oven with any of the protective covers removed or interlocks defeated. Voltage potentials of over 13,000 volts exist and are potentially dangerous. I hope this helps you.

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Runs but makes a super load pop sound with flame


It sounds like you're saying a flame and pop came out of the area where the internal electronics are? If that's the case, then I would suspect a failed high-voltage transformer, bad magnetron or that another high-voltage component is arcing, like maybe damaged wiring, but that's rare unless... ... I hate to suggest it, but maybe a "critter" has made his way into the high-voltage section! That can cause some really "interesting" effects! If the flame and pop are coming out of the cooking cavity, then it could be food debris or grease underneath the waveguide cover or in the waveguide. I would say the likliest cause is a failed HV transformer. If it's still under warranty, I'd call Sears right away to verify that. If it's not under warranty, you may want to pull it from the wall yourself and take it in to Sears or another shop yourself. You'll probably save about $50 as opposed to letting them come out to the home to service it.

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