Question about Sharp R-1500 Microwave Oven

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Sharp microwave is blowing fuses in the house. I opened it and found a circuit component broken, and evidence of shorting to ground. The item has 2 wires going to it much like a similar item on the side of the microwave cabinet. they are round and black, one has the numbers on it 35TXE21 12544 L170-15C 89821. What is the item? what is it's function?

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  • William Miller
    William Miller May 11, 2010

    That sounds like a thermostat or thermal cutout.

    What is your model number?

    Can you upload a good photo of the part and the general area it was mounted?

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5 Suggested Answers

brandonboyce
  • 84 Answers

SOURCE: sharp R-4A56 microwave oven dead

Did you check your circuit breaker to be sure that it wasn't tripped?

Posted on Jul 23, 2007

SOURCE: SHARP R-316F

easy to fix you need to cut the tracks to the led lights then solder 2 wires to the leds next use a 1k resistor on one of the wires then conect it straight to the power surply just after the bridge rectifier noteing+ and -

Posted on Mar 06, 2008

tiway1
  • 100 Answers

SOURCE: Makes a loud humming sound and blows fuse behind controll panel

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

MicrowaveSvc
  • 9012 Answers

SOURCE: faulty microwave function on the SHARP R-957 model (900watt)

This is a problem in one of the damper-related components, most likely the switch, but it may also be the motor or the damper door.

The damper is a door inside that opens or closes depending on cooking mode. If the controller senses that the door is not in the right position, it will shut down the cook cycle.

Sharp models stop after 59 seconds.

See the attached sample photo for a typical damper assembly.

Info on ordering Sharp UK parts / spares is here.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

2fe4c9c.jpg

Posted on Dec 13, 2008

  • 1311 Answers

SOURCE: the internal 8a ceramic fuse

Don't know if this a regular problem with this unit, but for this fuse to blow, there must be a problem further downstream. Maybe with the power supply or the Magnatron.

Posted on Sep 07, 2010

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I opened the door on my microwave oven and the fuse blown


I gotta do the same thing. Fuses wear out. Luckily they're usually a cheap part. Search for a diagram for your make/model on line or one close to it by the make. There should be 2 or 3 fuses easily accessible once the exterior is off. Search "order online + the fuses' part numbers". Favorite/bookmark that diagram to remove cover and pop out & replace all fuses. Make sure to follow safety guidelines, unplug and don't touch what it tells you not to, like any capacitors. Ground yourself just in case. I'm gonna wear work gloves too.

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Is it totally dead? No display? Or just does not cook? If it made an unusual noise before it 'died' something probably shorted out.... You need an ohm meter to troubleshoot. If the fuse is open, switches and HV circuit need to be checked before replacing fuse. Sometimes on the convection Microwaves (not just Sharp) the fuse will 'rust' and open rather than blow. Or the fuse holder can over heat and fail.

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Please rate solution

Aug 28, 2009 | Microwave Ovens

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.





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