Question about Microwave Ovens

1 Answer

When using convection oven, makes loud noise - Microwave Ovens

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,511 Answers

If it is under warranty you had best contract the maker for a replacement. Mild sounds are natural, but LOUD noises are a sign of component defects, damaged motors, etc.

Posted on Dec 25, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 3 Answers

SOURCE: does microwave ovens make noise while it is in process of heating?

It seems like it is the first time you either own or using a microwave oven. Yes, there are more than one fan/motors inside a microwave, depending upon the model/type.

Posted on Nov 04, 2008

saul49
  • 3 Answers

SOURCE: i've a Sharp R-953. convection+ microwave makes a lot of noise

check the fan blade on convection, may be loose.

Posted on Oct 30, 2009

bestdarngood
  • 3037 Answers

SOURCE: On microwave mode the oven

The magnetron (the part that heats the food) may be bad or the circuitry to the magnetron may have burned out. Basically my advice is that if you have no electrical expertise, it isn't worth fixing. The magnetron if bad, costs almost as much as a new microwave. If you open it up (make sure it has been unplugged for a few hours and don't seen any obvious burnt parts (including a fuse and the diodes), then most likely the magnetron is done and a new microwave is the way to go.

Let me know how this works out for you.

Benjamin

Posted on Aug 20, 2010

heatman101
  • 43501 Answers

SOURCE: Microwave is not working and is making loud

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

Microwave Oven Basic Troubleshooting Tips

heatman101
oi

Posted on Sep 29, 2010

  • 30 Answers

SOURCE: model 721.64282 microwave/convection oven -

No heat but otherwise normal operationA shorted HV diode, magnetron, or certain parts of the HV wiring would probably result in a loud hum from the HV transformer but will likely not blow the main fuse. (However, the HV fuse - not present on most domestic ovens - might blow.)
If the main power fuse is located in the primary of the high voltage transformer rather then at the line input, the clock and touchpad will work but the fuse will blow upon initiating a cook cycle. Or, if the fuse has already blown there will simply be no heating action once the cook cycle is started. There are other variations depending on whether the cooling fan, oven light, and so forth are located down stream of the fuse.

Some models may have a separate high voltage fuse. If this is blown, there will be no heating but no other symptoms. However, high voltage fuses are somewhat rare on domestic ovens.

A number of failures can result in the fuse NOT blowing but still no heat:


  • Bad connections - these may be almost anywhere in the microwave generator or the primary circuit of the HV transformer. A common location is at the crimp connections to the magnetron filament as they are high current and can overheat and result in no or intermittent contact. See the section: See the section: Testing the magnetron.
  • Open thermal protector - usually located on magnetron case. Test for continuity. It should read as a dead short - near zero ohms. See the section: Testing thermal protectors and thermal fuses.
  • Open thermal fuse - some ovens have one of these in the primary circuit. It may be in either connection to the HV transformer or elsewhere. Test for continuity. It should read as a dead short - near zero ohms.
  • Open HV capacitor - see the section: Testing the high voltage capacitor. A shorted HV capacitor would likely immediately blow the fuse.
  • Open HV diode - see the section: Testing the high voltage diode.
  • Open magnetron filament - This failure may also be due to loose, burnt, or deteriorated press (Fast-on) lugs for the filament connections and not an actual magnetron problem. See the section: Testing the magnetron.
  • Open winding in HV transformer. See the section: Testing the high voltage transformer.
  • Defective HV relay. A few models use a relay in the actual high voltage circuitry (rather than the primary) to regulate cooking power. This may have dirty or burnt contacts, a defective coil, or bad connections
  • Shorted HV diode - see the section: Testing the high voltage diode.
  • Short or other fault in the magnetron - see the section: Testing the magnetron.
  • Short in certain portions of the HV wiring. See the section: Testing and repairing the wiring and connections.

Depending on design, a number of other component failures could result in no heat as well including a defective relay or triac, interlock switch(s), and controller.


If you are interested in doing it yourself the following link will help : Microwave Repair Manual

(**All the above references to tests are found here)

Posted on Oct 22, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why is my microwave model 60609 making extremely loud noise and not heat?


Usually that is a sign that your magnetron tube has gone bad (shorted out).

Jun 10, 2014 | Kenmore 80822 80823 80824 80829 1500...

1 Answer

What is the loud noise?


What kind of noise? Is it high speed fan? or rotating motor? Please describe!

May 02, 2014 | General Electric Ge SCB2000F 950 Watts...

1 Answer

My Kitchenaid combo convection/mw works on convect but has a loud humming and no heat on microwave.


A loud humming noise in microwave mode will usually be a shorted high voltage diode or bad magnetron.

Sep 16, 2013 | KitchenAid Architect II KHHC2090S ...

1 Answer

My Dimension4's convection oven often starts to make grinding noises when it preheats.


From the description it is the turnable motor, eventually it will need to be replaced down the road.

Mar 22, 2012 | Microwave Ovens

1 Answer

Loud noise wont heat [sharp R-820 BC


This is an indicator that the magnetron has failed, especially when it is followed by a loud sound, but there are two other parts that can be a factor, the high voltage capacitor and diode. The Convection/Microwave Oven needs to be assessed for parts and labor and cost.

Mar 05, 2011 | Sharp R-820B Convection/Microwave Oven

1 Answer

I've a Sharp R-953. convection+ microwave makes a lot of noise


check the fan blade on convection, may be loose.

Oct 30, 2009 | Sharp Microwave Ovens

1 Answer

Kitchenaid builtin microwave buzzing


I would recommend changing the diodes as well. This will usually take care of the problem.

Oct 25, 2008 | KitchenAid KEMC377K Convection / Microwave...

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

60 people viewed this question

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

yadayada
yadayada

Level 3 Expert

75005 Answers

Cindy Wells

Level 3 Expert

5056 Answers

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

Answer questions

Manuals & User Guides

Loading...