Question about Frigidaire GLMV169D Microwave Oven

1 Answer

Frigidaire OTR MicroOven does not heat.

120VAC at HV Transformer. Need troubleshooting advise of HV side to Capacitor, Diode and magnetron so that I don't create a bigger problem. I find it hard to believe all components of HV side are shot.

Posted by on

  • Tom Bernhardt Jr. Nov 21, 2008

    Couldn't have asked for more. After finding out how to get to the info provided it covered all my concerns. Much appreciated for a response well covered. 5 Star

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 181 Answers

Its the magnetron mostly.

Posted on Nov 17, 2008

  • 10 more comments 
  • fixyy Nov 17, 2008

    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.



  • fixyy Nov 17, 2008

    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.



  • fixyy Nov 17, 2008

    Q - My microwave is running and sounds like it is working but will not heat up anything.
    A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
     



  • fixyy Nov 17, 2008

    Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
    A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.



  • fixyy Nov 17, 2008

    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.



  • fixyy Nov 17, 2008

     - 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. 



  • fixyy Nov 17, 2008

    Q - The fan in my microwave oven is not running will this hurt my microwave?
    A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.



  • fixyy Nov 17, 2008

    Microwave stopped working while cooking. Replaced a 20AMP fuse.
    When the cook cycle starts, microwave makes a groaning noise and stops. It loses power since the fuse is blown.
    Solution: High-voltage capacitor shorted. Replaced it and microwave works fine.
    Its located behind the fan underneath the high-voltage transformer.
    Remove the vent fan hood
    Remove the display control panel by removing the screw
    Take pictures of all the connections behind the control panel.
    Unhook all connections
    Remove the connections to fan
    Remove the fan
    Remove the screws and connections for interlocking switches.
    Make sure the high voltage capacitor is discharged!
    Remove the high voltage capacitor and replace
    Retrace the steps and put everything back.



  • fixyy Nov 17, 2008

    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 



  • fixyy Nov 17, 2008

    http://www.applianceaid.com/micro.html




    to repair the parts manually just click this link directly and follow the instructions carefully.
    thanks,

  • fixyy Nov 17, 2008

    The flame-oven sensor-thermostat is suppose to be closed ( full continuity ) all the time and will open up ( no continuity ) when needed, like when something like a small fire in the oven occurs.
    A wiring diagram showing where the flame/oven thermostat may be.
    A sample picture of a couple different flame/sensor thermostats 



  • fixyy Nov 17, 2008

    to check the capacitor with the help of meter  this is the link given just click it and follow the instructions carefully
    http://www.applianceaid.com/micro4.html



    rate the solution if it helps u.
    feel free for further assistance.
    thanks.

×

1 Suggested Answer

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

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 Sharp Microwave Drawer KB-1614LS not heating?


You should check for 3 volts on sec coil supply for magnetron but do this check with the hv capacitor and hvr disconnected if 3volts is present , most probably your magnetron is deffective, replace it with the same type

May 13, 2014 | Sharp Microwave Ovens

1 Answer

Mcc 3880e m


There is no microwave, so I suggest to check all HV components (magnetron, HV reactifier diode, HV fuse or protect diode, HV capacitor and eventually transformer).

Dado

Jan 22, 2014 | AEG Microwave Ovens

2 Answers

Micro wont heat. fix or replace? what could be the prob?


Sorry to read about your problem, I hope this helps you out.

Here are some problems you can have
  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. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used).
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

4 Thumbs - Very Helpful
3 Thumbs - Helpful

Jan 05, 2011 | Kenmore 63792 Microwave Oven

1 Answer

Microwave activate but will not heat food all light and buttons work but will not heat up


Sorry to read about your problem, I hope this helps you out.

You can many different issue's
  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. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used).
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

4 Thumbs - Very Helpful
3 Thumbs - Helpful

Jan 04, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

GE JVM1440 will not heat.


Sorry to read about your problem, I hope this helps you out.

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. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used)
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

4 Thumbs - Very Helpful
3 Thumbs - Helpful

Jan 01, 2011 | GE JVM1440 Microwave Oven

1 Answer

Model 721.64282 microwave/convection oven - microwave not heating and making a loud noise. convection oven works


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)

Oct 21, 2010 | Kenmore 63663 Microwave Oven

1 Answer

Hi, I have a SHARP Microwave Model R398F. Its less than a year old. The display and timer work fine but does not heat up. Can you please let me know what the problem could be. Thanks Js


If the operation is otherwise normal with the exception of heating food, common causes include; (to diagnose requires discharging of the HV capacitor) if you are inexperienced with working with HV I suggest seeking professional help.

Open thermal protectors or thermal fuses.

Open HV Diode.

Open HV capacitor

Open magnetron filament

Open winding in HV transformer

Defective HV relay

Shorted HV diode

Short or other fault in the magnetron

Short in certain portions of the HV wiring

Replacement Magnetrons (the most likely cause if not charring or defective components are found when troublshooting the small parts, can typically be had for around $45.00 just do a web search for your model number.

Good Luck

Sep 07, 2010 | Sharp Microwave Ovens

1 Answer

Ge jvm 1653 won't heat


You've got a problem in the microwave circuit, which could be one or more of the following components -

1) HV diode
2) HV Capacitor
3) HV transformer
4) Magnetron

I am leaning to the diode, but it would take further investigation to determine for sure. Diodes are cheap, as if the capacitor, and replacing those first would not necessarily be in vain if it turns out to be the transformer or magnetron. And I would be most inclined to say it's the magnetron before I would think transformer.

Reply back what you find or if you have more questions.

Feb 04, 2009 | GE Microwave Ovens

1 Answer

Burning odor, no heat


A burning smell along with a different sound (growl) USUALLY indicates a breakdown in the High Voltage Side. This is not a direct short (short circuit) or the line fuse would have blown shutting everything down. The High Voltage Side is made up of-- The Secondary ,or High Voltage Side of The High Voltage Transformer, A High Voltage Diode, A High Voltage Capacitor, and The Magnetron. If The High Voltage Transformer is the problem it will smell like a florescent light ballast burning, and will smell each time you turn on the MW. A HV Diode burns and opens, thus no more smell. A HV Capacitor usually does not burn nor does the Magnetron. There is no Cheap-Fix unless you can see that the HV Diode is burned into and you can get to it to replace. CAUTION: Always unplug from power before attempting to repair. NOTE: If you replace a Diode make sure it goes back in the same direction it came out. Yes there is a front and back.

Jan 26, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Microwave oven problem


If your microwave is doing everything, but heating it could be any one of the following components: Magnetron HV Capacitor HV Diode HV Transformer This network works in conjunction to produce the high voltage required to heat. Taking live voltage measurements is dangerous and not recommended. You can, however, do resistance checks on the components with the unit unplugged to see if you can isolate the problem any further. The HV Diode should be mounted somewhere on or near the HV capacitor and will read an open in one direction and a relative short in the other. If you put a meter on the capacitor you should see a varying resistance as the capacitor charges and discharges. There should should be a wiring diagram inside your control panel with the resistance readings for the primary and secondary windings of the transformer and the filament of the magnetron. In a nut shell, you probably have either a bad magnetron or a bad diode. Those are the two components that fail more frequently. Of course, double check all your interconnecting wires too. Good luck and let me know if this helps.

Jun 22, 2007 | GE JVM1660 Microwave Oven

Not finding what you are looking for?
Frigidaire GLMV169D Microwave Oven Logo

Related Topics:

33 people viewed this question

Ask a Question

Usually answered in minutes!

Top Frigidaire Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9030 Answers

yadayada
yadayada

Level 3 Expert

70365 Answers

Jaime Hernandez

Level 3 Expert

2296 Answers

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

Answer questions

Manuals & User Guides

Loading...