Question about Sharp R-1460 Microwave Oven

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Makes a loud humming sound and blows fuse behind controll panel

Sharp R-1461 Microwave. Makes a loud humming sound and blows fuse behind controll panel. Is it scrap or reasonably fixable?

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  • 2 more comments 
  • husq125 Nov 26, 2008

    loud rattlle sound then pops breaker behind control panel. Model R-1460 Sharp microwave.

  • 71impala Jan 24, 2009

    Where is this capacitor located?

  • simmonsps May 14, 2009

    Makes a loud humming sound and blows fuse behind control panel.

  • Anonymous Mar 15, 2014

    Makes a loud alarm sounding noise, did unplug overnight and continued with sound after replugging back in

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Most likely a shorted capacitor is causing the fuse to blow. Easy and cheap to fix.
Check with www.martinmicrowave.com or call toll free 1-877-894-0035 for parts info

Posted on Sep 06, 2008

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How to fix loud hum and no heating in Sharp model R-308KW?


Hi,
There could be a variety of reasons why this happens, but the likeliest
reason is the secondary interlock or monitor switch is broken. These are micro switches that tell the microwave that the door is closed. If this switch is broken, then the microwave thinks the door is still open and the carousel table won't turn, and the oven will not heat up.
I replaced an interlock switch last Saturday. The switch was $7.00 and took me an hour.
Ask your local repair person to test the interlock and monitor switches first, then go from there.
Good luck,
Hank

Jul 09, 2014 | Sharp R-308KK / R-308KW 1100 Watts...

2 Answers

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!

Sep 14, 2009 | Sharp R-1480 Microwave Oven

1 Answer

Microwave makes deep humming sound and doesn't heat


Your magnetron that actually does the cooking is making that humming sound. That part needs to be replaced before it starts blowing your fuse inside the microwave. That part is the one located on top behind the control panel of your microwave and is about the size of a persons hand (sometimes smaller sometimes bigger). With everthing unplugged you can take the cover off and see it. It has some cooling fins on it and is held in place with only three to four screws. There are three to four wires that come out of it and go to only a couple of places one of them being a large capacitor that is about three to four inches long with terminals at its top. Find a magnetron at a local tv repair shop (reputable), a local electronic supply house (they can order you one) or on the internet. They cost from $25 to $60 depending on size of microwave. If you can do it yourself you can save about $40 to $50. Let me know how it goes. Good luck.

Jan 22, 2009 | GE JVM1631 Microwave Oven

1 Answer

Please help me


Q - My microwave went dead when I opened the door ( same problem as closed the door ).
A - This often is a stuck or faulty door switch and it has blown the interior microwave fuse.
Q - My microwave is completely dead.
A - House fuse has blown or interior fuse inside the microwave has blown ( usually a part inside the microwave makes this fuse blow ) Sometimes a bad fuse holder inside the microwave cannot hold the fuse tight enough and the fuse will blow as well. 
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.
Q - I burnt something in my microwave and now it is dead...help!
A - The fuse inside the microwave may have blown, but more commonly the flame/oven thermostat has sensed the over cooked food and the flame/oven/cavity thermostat has opened up - Info on that 
Q - My microwave seems to shut off every once in a while, what might be wrong?
A - Make sure you hear the fan is still operating in your microwave. Next is to make sure the air intake grill on your microwave is not plugged up with air borne dust and dirt.
Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.





Jan 02, 2009 | Sharp R-242 Microwave Oven

1 Answer

Sharp microwave is dead


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/xformer.html

You can usually find exploded views Sears parts site.

BUT Once you have the part numbers, the best place to order Sharp parts is Tritronics.

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

Dec 01, 2008 | GE XL1800 1100 Watts Microwave Oven

1 Answer

My sharp microwave made a loud humming sound for a few seconds and quit working. The clock and light are also not working.Sharp model R-1461-A, serial 121279, May 1997


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:
http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/xformer.html

You can usually find exploded views Sears parts site.

BUT Once you have the part numbers, the best place to order Sharp parts is Tritronics.

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

Dec 01, 2008 | Microwave Ovens

1 Answer

Blowing fuses


[double post]

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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.

But I would wait until the authorized servicer gets there (or take it to them) to maintain your warranty.

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

Jul 02, 2008 | Maytag MMV5207A Microwave Oven

1 Answer

Dead replaced fuse now makes loud noise


Yes that noise is causing your fuse to blow. Machine gun sound sounds like the High Voltage Capacitor or High voltage diode is bad. (Loud humming sound is usually a bad magnetron or bad power transformer). Most of these parts are inexpensive, except for the magnetron. But most of the repair bill is most likely going to be for labor.

Based on your model, it looks like an over the range microwave. And to fix any of these problems require the removal of the microwave from the wall. So its up to you if you want to deal with that hassle. But you also have to consider that you'll probably have a hard time trying to find a new microwave that will fit.

Mar 25, 2008 | Sharp R-1480 Microwave Oven

2 Answers

Microwave Fan Running for 24 hours


Sounds like cycling the power line did it.

Aug 28, 2007 | Sharp R-1610 Microwave Oven

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