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Microwave doesnt cook

The light and fan both work but it no longer cooks

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  • Microwave Ovens Master
  • 8,820 Answers

Generally, the most common causes of a failure to heat are:
- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

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

Posted on May 12, 2008

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Exterior of oven , top and both sides gets very hot to touch, when cooking +- 10 minutes or more the last couple of days; no Error ( E41/42/45 or 47 are being displayed. Fan is normal, functions: OK


There could be food or oil buildup around the door frame which will absorb some of the radiant and microwave energy whilst cooking. Give it all a good clean and see if that helps. If everything else is working properly, it may be a problem with the cooling fan. Microwave ovens have a "stirrer fan" inside the roof or rear of the cooking area to disperse the microwaves and some convection / microwave ovens also have a cooling fan which assists in dissipating heat within the cabinet.

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The light and fan continue to run after cooking.


open the microwave cover & check micro switch attached with door lever.it may be displaced or damged. replace it

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Mine is a similar problem - light and fan BOTH stay on when the cooking/heating finishes! The door remains closed and the food/beverage cooks. However, when it's finished the light remains on and the


There are a number of interlock switches that the oven door activates when closed, sometimes one becomes defective causing the main fuse to blow in the microwave or continue to run when time is up.

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Won't heat or cook. Has power, light and clock work, Fan comes on when you push cook button but the carousel doesn't turn and it doesn't cook


Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

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Cooking doesnt start


Microwave?

Generic advice follows.

Do you open the door while the machine is cooking? Do it a lot? For a long time (months)? Check your door safety interlock switches. The microswitches can not stand that type of abuse. I have personal knowledge on this. I try not to open the door until it stops, but it is hard usually to do that!!!

If you need more help, let me know.

a

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Microwave still continues after cooking time is ended


It is the fan. Im guessing it only happens on combination cook and not when you are only using the microwave setting. It happens because the oven is hot and it helps to cool it quicker. It is normal. The microwaves are not working and neither is the oven-just the fan.

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JVM1190 wont cook


You have a blown actuator. This is the device that creates the microwaves that cook the food. The cost of one of these will be as much as a new unit.

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Noisy microwave not cooking


Is it making a louder than usual; buzz or hum when you try to cook?

If so, I would suspect a shorted high voltage diode ore a bad magnetron.


-.htmHere are some links you or someone you know can use for test help, but read
their safety warnings first:






line-height:normal">mso-fareast-font-family:"Times New Roman"">http://www.microtechfactoryservice.com/diode.html



line-height:normal">mso-fareast-font-family:"Times New Roman""> http://www.microtechfactoryservice.com/mag_test.html



line-height:normal">mso-fareast-font-family:"Times New Roman""> http://www.microtechfactoryservice.com/xformer.html





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We have the service manual and I have uploaded it to our site for you here.


-.htmPlease reply back here if you still need help.

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

Jul 12, 2008 | Sharp R-1490 Microwave Oven

1 Answer

Does the microwave oven auto shut-off when you open the door while cook time is remaining?


Yes. The two hooks sticking out from the inside of your door go in and activate a series of switches. Once you press or pull to open the door, before the door even moves, one of the door switches will disengage and turn off the high voltage.
The fan and light may still be on, but the unit is no longer cooking.

Jun 26, 2008 | Microwave Ovens

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