Question about Sharp R-340 Microwave Oven

2 Answers

My Sharp R-340D microwave works perfectly but Does NOT HEAT FOOD

Dear All , I have a Sharp Microwave model R-340D . it has worked fine for about 2 years . but suddenly , It stoped to heat at all . All other functions operates pretty well , ie , the lamp is on and the motor rotates during heating . and the timer operates we during the setted heated period . However , NO HEATING occurs . There is NO buzzling sound . What do you recommend me to do . Thanks, Best Regards, Eng.Waleed Said Mohamed .

Posted by Waleed Makarem on

  • Anonymous Mar 22, 2014

    no heat

×

Ad

2 Answers

Anonymous

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 878 Answers

Waleed, Since the microwave is going through all its motions we can feel safe that the oven and magnetron thermostats are ok. If they were bad you would not have a display. Just inside the control panel to the left, you have 3 switches which the door activates. A primary (top switch) a secondary (bottom switch) and a monitor switch (middle). If the primary or secondary switch is not closing when the door is shut, you high voltage side will not activate, therefore no heat. If the monitor switch failed or found either the primary or secondary switch closed with the door open, it would blow the main fuse and the oven would be dead. Therefore Im leaning on either the primary or secondary switch not operating correctly. When checking these switches, unplug and discharge the capacitor. This is high voltage. Good luck

Posted on Jun 17, 2006

Ad

Anonymous

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Check the relay for the magnetron it is the big relay burned contacts

 

Posted on Oct 10, 2007

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

Microwave oven light on but not warming food

send me schematic diagram of microwave oven brand sharp,model R-658L(S), i couldn't find the second fuse in it. it works but not heat food, please
1helpful
1answer

My dcs mo-24-Ss microwave oven cannot heat the food after turn on, everything working fine other than no microwave come out

Assuming the turntable, inside light, and internal cooling fan all work when you press "Start" to cook, then I would suspect a bad magnetron, or a bad connection at the "FA" terminal of the magnetron.

If one or more of those three items do not work when you hit "Start", the I would suspect a bad door switch or mount.

The DCS MO24SS is essentially a rebranded Sharp R-530E-series microwave with different cosmetics and a higher price.

The service manual for the Sharp model is here.

The internal Sharp parts in the manual will interchange, but not the external cosmetic parts.

You can order Sharp parts from Encompass here.
0helpful
1answer

SHARP R 88BKM no microwave

David
This is a sure sign that the MAGNATRON unit has went out on your oven and will need replaced! (This is what cooks the food!)
Please take a second and rate my response!
Thank You!
0helpful
1answer

Ge microwave won't heat everything else works fine

Hello t_sumner4756,
Everything else can work perfectly fine but if it doesn't generate microwaves to heat your food than it is not working ( you knew that anyway).. Unfortunately, and in most cases when you microwave stops working in that manner..the components at fault are either the Magnetron, Filament PS or a High Voltage Capacitor..What that means is that you are probably better off just replacing the entire appliance rather than attempting to repair it. If it is a year old or less, bring it back to where you purchased it and have them replace it.. I am sure that is not what you wanted to hear but when the cost to repair exceeds the cost to replace... it just isn't worth repairing.. Plus.. there is an element of danger associated with these kinds of repairs...
Regards,
Rick
0helpful
1answer

My Sharp R-340D microwave works perfectly but Does NOT HEAT FOOD

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

Microwave Oven Basic Troubleshooting Tips

heatman101

fggfd
0helpful
1answer

Microwave works fine, but wont heat food....

I would say the high voltage rectifier diode has blown.

See http://www.gallawa.com/microtech/diode.html for help in diagnosis.

Okay, now that I see the model number, that's a US model:

You can usually find exploded views and order parts by entering your model number here at the Sears parts site.

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.
0helpful
1answer

MICROWAVE NOT HEATING

I have the same problem. Everything seems to work except it doesn't heat up food.
I remember last time when it was working. I pressed the start botton before I closed the door. So it didn't start automatically, and I pushed start and it worked(it still heat up the food), but it doesn't work now. Help Please!!!
I have a Whirlpool Gold GH5184XPQ.

Thanks in advance
0helpful
1answer

3 year old unit, oven works, microwave does not

hi,

You may need a new magnetron, contact sharp or the store you got it from; most microwaves have a 3-5 year warranty on the magnetron. If it's not in warranty, find a good appliance repairman, this is a difficult and dangerous repair job.
Not finding what you are looking for?
Sharp R-340 Microwave Oven Logo

943 views

Ask a Question

Usually answered in minutes!

Top Sharp Microwave Ovens Experts

Ekse

Level 3 Expert

13435 Answers

Oloyede Monsuru

Level 3 Expert

1468 Answers

Michael Thomas
Michael Thomas

Level 3 Expert

3056 Answers

Are you a Sharp Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...