Question about In Microwave Ovens

Open Question

Currently working on zephyr model blodget...fan works on cool down mode but won't come on in cook mode ....could it be a faulty switch or something else

Posted by on

5 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

MicrowaveSvc
  • 9047 Answers

SOURCE: Keypad only works

This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

This can be caused by slamming the door or by habitually opening the door while it's cooking without hitting the Stop pad first.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

Posted on Feb 13, 2008

  • 2468 Answers

SOURCE: Maytag Microwave, Model MMV5000BAB. Discrepancies

remove the outer cover and unplug unit,then discharge the high voltage capacitor and check its capacitance with a capacitor checker,then check the high voltage diode in this circuit also,if they open up the high voltage doubler circuit won't produce the high voltage necessary to operate the magnetron tube to heat the food contents,also the magnetron can be going bad or can be loose setting up a vibration in the unit producing the hum also,your control board also has a relay in this unit that can also affect operation of unit heating and lighting

Posted on Nov 21, 2010

  • 8909 Answers

SOURCE: We have just purchased a

In most modern combination microwave ovens, if not all, there is a fan that comes on after use to cool the magnetron and cavity down. This is quite normal but if you still have doubts, contact Kenwood's web site and send them a question.
Hope this halps to put your mind at rest.

Posted on Nov 27, 2010

  • 547 Answers

SOURCE: GE SpacemakerXL, model #JVM1330BW 002, does everything but run

On some ovens, it can be a door switch. I've jiggled a few doors over the years and had some ovens start running. In this situation, the switch assembly is usually out of adjustment. Or the door is not activating the switches properly.

Posted on May 03, 2016

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Kenmore model 721 850 the cooling fan doesn't run all the time


This could be due to a intermittent micro switch, or a faulty cooling fan. This is critical in keeping the magnetron cool when cooking.

Apr 04, 2012 | Kenmore Microwave Ovens

Tip

Troubleshooting Guide


  • Problem: Totally dead oven.
    Possible causes:
    1. No power to outlet (blown fuse or tripped breaker or GFCI).
    2. Blown main fuse - likely due to other problems.
    3. Open thermal protector or thermal fuse.
    4. Defective controller or its power supply.
    5. Clock needs to be set before other functions will operate (some models).

  • Problem: Totally dead oven after repair.
    Possible causes:
    1. Cabinet screws replaced in incorrect location (safety interlock not engaged).
    2. Any number of screwups. :)

  • Problem: No response to any buttons on touchpad.
    Possible causes:
    1. Door is not closed (some models).
    2. You waited to long (open and close door to wake it up).
    3. Controller is confused (pull plug for a minute or two to reset).
    4. Defective interlock switches.
    5. Faulty controller or its power supply.
    6. Touchpad or controller board contaminated by overenthusiastic cleaning.
    7. Defective/damaged touchpad.

  • Problem: Oven runs when door is still open.
    Possible causes:
    1. Damaged interlock assembly.
    2. Cooling fans (only) running due to bad sensor or still warm.

  • Problem: Oven starts on its own as soon as door is closed.
    Possible causes:
    1. Defective triac or relay.
    2. Controller is confused (pull plug for a minute or two to reset).
    3. Defective controller or its power supply.
    4. Touchpad or controller board contaminated by overenthusiastic cleaning.
    5. Defective/damaged touchpad.

  • Problem: Oven works but display is blank.
    Possible causes:
    1. Defective controller or its power supply.
    2. Broken display panel.
    3. Oven needs to be reset (pull plug for a minute or two to reset).

  • Problem: Whacked out controller or incorrect operation.
    Possible causes:
    1. Previous or multipart cook cycle not complete.
    2. Controller is confused (pull plug for a minute or two to reset).
    3. Defective controller or its power supply.
    4. Touchpad or controller board contaminated by overenthusiastic cleaning.
    5. Defective/damaged touchpad.
    6. Defective sensor (particulalry covection/mirowave combos).

  • Problem: Erratic behavior.
    Possible causes:
    1. Previous or multipart cook cycle not complete.
    2. Bad connections in controller or microwave generator.
    3. Faulty relay - primary (or HV side, much less commonly used).
    4. Defective controller or its power supply.
    5. Bad contacts/connections on mechanical timers. Intermittent fuse.
    6. Power surge at start of cook cycle confusing controller.
    7. Microwave (RF) leakage into electronics bay.

  • Problem: Some keys on the touchpad do not function or perform the wrong action.
    Possible causes:
    1. Touchpad or controller board contaminated by overenthusiastic cleaning.
    2. Defective/damaged touchpad.
    3. Controller is confused (pull plug for a minute or two to reset).
    4. Faulty controller.

  • Problem: Microwave oven does not respond to START button.
    Possible causes:
    1. Defective START button.
    2. Faulty interlock switches.
    3. Door is not securely closed.
    4. Faulty controller.
    5. You waited too long - open and close door to wake it up!

  • Problem: No heat but otherwise normal operation.
    Possible causes:
    1. Blown fuse in HV transformer primary circuit or HV fuse (if used).
    2. Bad connections (particularly to magnetron filament).
    3. Open thermal protector or thermal fuse.
    4. Open HV capacitor, HV diode, HV transformer, or magnetron filament.
    5. Shorted HV diode, HV capacitor (will blow a fuse), or magnetron.
    6. Defective HV relay (not commonly used).

  • Problem: Timer and light work but no heat, cooling fan, or turntable rotation.
    Possible causes:
    1. Defective (lower) door interlock switch or door not closing fully.
    2. Faulty relay or triac.

  • Problem: Fuse blows when closing or opening door:
    Possible causes:
    1. Defective door interlock switch(s).
    2. Interlock switch knocked out of position.
    3. Misaligned door.

  • Problem: Loud hum and/or burning smell when attempting to cook.
    Possible causes:
    1. Shorted HV diode, magnetron.
    2. Burnt carbonized food in or above oven chamber.
    3. Shorted winding in HV transformer.
    4. Frayed insulation on HV wiring.

  • Problem: Arcing in or above oven chamber.
    Possible causes:
    1. Burnt carbonized food deposits.
    2. Exposed sharp metal edges.

  • Problem: Fuse blows when initiating cook cycle.
    Possible causes:
    1. Defective interlock switches or misaligned door.
    2. Shorted HV capacitor.
    3. Shorted HV diode.
    4. Shorted magnetron (probably won't blow main fuse but HV fuse if used).
    5. Defective triac.
    6. Old age or power surges.
    7. Defective HV transformer.
    8. Short in wiring due to vibration or poor manufacturing.

  • Problem: Fuse blows when microwave shuts off (during or at end of cook cycle).
    Possible causes:
    1. Defective triac (doesn't turn off properly).
    2. Defective relay.
    3. Shorting wires.

  • Problem: Oven heats on high setting regardless of power setting.
    Possible causes:
    1. Faulty primary relay or triac or HV relay (not commonly used).
    2. Faulty controller.

  • Problem: Oven immediately starts to cook when door is closed.
    Possible causes:
    1. Shorted relay or triac.
    2. Faulty controller.

  • Problem: Oven heats but power seems low or erratic.
    Possible causes:
    1. Low line voltage.
    2. Magnetron with low emission.
    3. Faulty controller or set for wrong mode.
    4. Stirrer (or turntable) not working.
    5. Intermittent connections to magnetron filament or elsewhere.
    6. Faulty primary relay or triac or HV relay (not commonly used).

  • Problem: Oven heats but shuts off randomly.
    Possible causes:
    1. Overheating due to blocked air vents or inoperative cooling fan.
    2. Overheating due to bad magnetron.
    3. Bad connections in controller or microwave generator.
    4. Faulty interlock switch or marginal door alignment.
    5. Faulty controller.
    6. Overheating due to extremely high line voltage.
    7. Stuck stirrer fan resulting hot spots detected by sensors.

  • Problem: Oven makes (possibly erratic) buzzing noise when heating.
    Possible causes:
    1. Fan blades hitting support or shroud.
    2. Vibrating sheet metal.
    3. Vibrating transformer laminations.
    4. Turntable or stirrer hitting some debris.

  • Problem: Oven light does not work.
    Possible causes:
    1. Burnt out bulb :-).
    2. Bad connections.

  • Problem: Fans or turntables that do not work.
    Possible causes:
    1. Gummed up lubrication or bad motor bearing(s).
    2. Loose or broken belt.
    3. Bad motor.
    4. Bad thermostat.
    5. Bad connections.

on Mar 30, 2008 | Kenmore 80412 Microwave Oven

1 Answer

JennAir Microwave works perfectly but won't quit running.


One or two of the micro switches have failed, you will need a professional to remedy the situation.

Apr 03, 2012 | Jenn-Air Microwave Ovens

1 Answer

GE Over range microwave model JVM1443LK01 This started a couple days ago. After removeing something from the microwave and we shut the door, the fan started up. The fan will run as long as the door is...


I would check the door switches for a faulty switch. If it were condensation on the control panel. I would think it would have dried out by now unless it has damaged the control board.

Mar 22, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Frigidaire model cfmv156fmc allows programming, lights work but when hitting go wont turn on yet timer is counting down.


If the inside light comes on when you try to cook, but the turntable and internal cooling fan do NOT, then that's a bad bottom door switch or that switch's mount.

See this helpful text file.

If the inside light, turntable, and internal cooling fan DO all come on when you try to cook, but it does not cook, then you have a bad relay or connection on the control circuit board, which we can repair for $39.95. Details here.

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

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

Jan 11, 2011 | Frigidaire Microwave Microwave Oven

2 Answers

We have just purchased a Kenwood microwave/combination oven and are concerned there may be a problem. When the food has finished cooking and the microwave beeps it seems there is a fan or something still...


In most modern combination microwave ovens, if not all, there is a fan that comes on after use to cool the magnetron and cavity down. This is quite normal but if you still have doubts, contact Kenwood's web site and send them a question.
Hope this halps to put your mind at rest.

Nov 27, 2010 | Microwave Ovens

2 Answers

I have a GE SpacesaverXL model JVM1350BW. It does not heat up. The interior light, surface light, fan, clock, keypad all work normally. When a cooking mode is chosen and START is pressed there is a...


I wouldn't worry about the sensor error right away.

Sometimes that's just caused when the door is opened before steam could be detected or steam was not detected in the maximum amount of time.

Once it's all working again, if you still get the error regularly, it may be a bad humidity sensor.

If the internal cooling fan IS running when you try to cook AND the oven is not heating, it's probably a failed secondary interlock relay on the control circuit board.

If the internal cooling fan is NOT running when you try to cook AND it's not heating, the bottom door switch is probably the culprit.

Here's is a file on checking and replacing door switches.

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are working.

Listen to that very carefully, and listen to yours to see if the cooling fan is working.

When I say internal cooling fan, I do not mean the hood vent exhaust fan which you can turn on and off manually.

I'm instead talking about the internal fan which comes on automatically whenever you microwave.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

dee77f7.jpg

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Let me know if I can help you further.

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

Aug 22, 2010 | GE JVM1350BW/WW/AW/SY Microwave Oven

1 Answer

The microwave shuts off and will not re start until completely cooled down.


I would suspect that the magnetron is overheating and that the magnetron's thermostat is cutting power until it cools down.

It may be overheating because the internal cooling fan is not running when you're cooking.

When I say internal cooling fan, I do not mean the hood vent exhaust fan which you can turn on and off manually.

I'm instead talking about the internal fan which comes on automatically whenever you microwave.

It is vital that the cooling fan runs, or the magnetron will soon be destroyed.

It may also be that your filter is clogged, or your exhaust duct work is clogged.

FixYa's Web site is currently not notifying us when replies to our Clarification Requests are posted, so please reply directly to me with your full number from the tag on the unit so I can help you with free do-it-yourself tips or an estimate.

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

Feb 09, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Our JVM1653 stopped cooking, everything else works


Please note that FixYa is not currently notifying us Experts when Clarification Requests are answered.

To allow us to help you effectively (at no charge), please post a
NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, your symptoms, as well as the answers to these questions:

- When you try to microwave are the inside light, internal cooling fan and turntable all working?

- Is there any unusual noise or is it louder or quieter than normal?

(A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.)

We have a sound clip here of what a microwave should sound like when the cooling fan and high voltage section are working.



Oct 10, 2009 | GE JVM1653 Microwave Oven

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

24 people viewed this question

Ask a Question

Usually answered in minutes!

Top In Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

D. E. Hev

Level 3 Expert

1167 Answers

Ron Dufek
Ron Dufek

Level 3 Expert

398 Answers

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

Answer questions

Manuals & User Guides

Loading...