Question about Sharp KB-6002LS 1000 Watts Convection / Microwave Oven

1 Answer

Sharp microwave kb-6002ls making buzzing noise

Starts about three seconds after turning microwave on. Almost sounds like a vibration, like something came loose.

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  • stevelageson
    stevelageson Dec 03, 2012

    It functions properly otherwise, heats up food etc.

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1 Answer

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  • Sharp Master
  • 14,553 Answers

Someone would have to open the unit to "hear" where it is coming from, possible fan issue or even the power unit inside.

Posted on Dec 04, 2012

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: sharp r-360e problems

This is most lkely caused by the shorted high voltage rectifier diode or magnetron.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

You can order Sharp parts there or from Tritronics at http://www.wehaveparts.com

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

Posted on Dec 17, 2007

bulldogchief
  • 388 Answers

SOURCE: microwave popped and now does not heat

Okay, first we need to separate the situations. You were boiling water on the stove and had the range hood fan running to **** up the steam. Then you put something in the microwave to heat and you heard a pop and then zip-o.

The water on the stove has nothing to do with the situation, the fan you turn on is not part of the microwave, so it has nothing to do with the microwave.

The pop you heard and then the humming suggests the magnetron failed. You said you found a blow fuse and replaced it and still nothing, right? The magnetron is the most likely culprit...I would think it is safe to say that the magnetron shorted and drew enough current to blow the fuse.

Replace the magnetron and if that doesn't work, let me know here. Good Luck!

Posted on Sep 14, 2009

  • 2 Answers

SOURCE: Is there a recall on

We had an R-240 or R-250. I can't tell you which because the other night while not in use it caught our kitchen on fire. It was just plugged in and not in use. The insurance guy said that this can happen. Maybe don't buy the R series from Sharp. Or keep it unplugged when not in use.

Posted on Mar 06, 2010

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There is a burn mark in the back corner. We sometimes see electrical 'arcs' in that area when its running.


A convection microwave is more forgiving with small bits of metal than a regular microwave so the small chip won't make a difference. What you are seeing is the initial stages of magnetron failure which means that soon you will be in the market for a new microwave.
Sorry the info isn't of a happier nature.

Mar 05, 2012 | Sharp KB-6002LS 1000 Watts Convection /...

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Buzzes when starting then blows the fuse


there is an electrical problem.
my suggestion is that you will have to dispose that microwave and get a new one.
you dont want to chance a fire. andwave c yes mircroan cause fires.

Apr 26, 2009 | Microwave Ovens

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Works - but the sound has changed


Possibly, the "fault" was the buzzing in the first place! Buzzing is usually a cabinet vibration caused by magnetic fields from the "gubbins". If the buzzing should occur again, try pushing/ pulling/ poking the cabinet while the oven is running, you may find a position that causes the buzz to stop.
Another possibility is you previously had something else placed in close proximity to the oven.
If a rattling cabinet is the problem, either try to reposition something, or just ignore it!

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Ge microwave - making noise


I have a GE counter top microwave oven. When the oven starts cooking (the magnetron turns on) the oven makes a harsh buzzing noise. What is wrong and what should be done?

Mar 07, 2008 | Microwave Ovens

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Loud noise


If you mean a loud buzz that cuts on and off as the oven works, it is probably the outer metal cover vibrating as the magnetron powers up and down. Try holding/ pushing/ poking the metal cover while the oven is working, if the noise abates or goes away, this is the problem.
You may get relief by simply tightening the screws securing the cover, if not, maybe a little careful insertion of a thin strip of cardboard or similar, at the point the vibration occurs, may dampen it. Good luck.

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