Top Reasons Microwave Is Not Heating - Microwave Oven Troubleshooting

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Microwave not heating? This video provides information on how to troubleshoot a microwave oven and the most likely defective parts associated with this problem.
Commonly replaced microwave parts:
Turntable Motor
Touchpad
Control Board
Magnetron
Diode
Transformer
Fan Motor
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[@alvaroadriano8740]

Thank you! After watching this, I will buy new microwave. :)

[@mduduzigama5534]

🤣🤣🤣😂

[@anquoc2207]

Lol =)))

[@thomaseh6991]

Yea same here

[@hassankhan]

That's true ... I'm buying a new one today after watching this video! Its NOT WORTH the risk to save a petty few dollars to fix it and risk the safety of family and house! 👎🏽😡

[@mundo1606]

Lmaooooo!!!!!

[@obijuankenobi420]

Thanks to your video I now know my microwave has a flux capacitor.......now I gotta get my microwave up to 88 mph.

[@NihalAhamed370]

Back to future fan boys

[@donrizzoli7418]

just please don't make out with your mom

[@davidshields7072]

I lost heat on my microwave yesterday, think simple before going for the more difficult solutions. As with all electronic based equipment, do a power down reset by pulling the plug and reinserting again. My machine came back to normal and save me getting a hernia carrying it to my workshop. Should be #1 on the check list.

[@davidshields7072]

Ooops! There’s a similar reply further along which I missed, sorry.

[@Susan70003]

@@davidshields7072 I saw yours first. So if it has lights but doesn't power the turn table and heat the food a power down might reset it?

[@davidshields7072]

@@Susan70003 #1 on the check list, leave the microwave unplugged for 30 seconds and then plug back in, if the microwave doesn’t work then there’s a bigger problem.

[@Susan70003]

@@davidshields7072 Thank you. I had to use the circuit breaker as there was no plug access unless I remove the microwave to get behind it. Circuit breaker in the off position for a minute and microwave still wouldn't cook. Thanks for the suggestion tho. Moving onto the next remedy.

[@scorpleeon]

Worked for me. It’s my mom’s and my sister who lives with her is always ready to throw something out and buy new instead of doing basic research. Simpler than opening this sucker up so Tks

[@Maplie]

I was curious about how hard it would be to fix one without professional help. Thanks for the info and that disclaimer at the end. Probably a better idea to let professionals handle this if I want to repair one lol

[@james77011]

Ahh! This was a simple repair.. don't be afraid 😳

[@ji6087]

Pressing Ctrl+Alt+Delete got my microwave working again 💪

[@lindabradford9591]

Good job. Easy fix lol

[@willtrego]

Great video, thanks. My microwave stopped heating, but the lights, sounds, and spinning tray still worked. One of the three door switches had a high resistance so I replaced all 3 and fixed the issue.

[@paulb9769]

I am surprised because I always thought that if a switch was faulty there would be no power to anything?

[@abdulwadood.8]

How did you replace the 3 switches

[@farawayskies]

@@paulb9769 Agreed. Very poor design if a switch could fail but the microwave continues to operate totally normal except for heat.

[@Mabalzitch2024]

Great video as usual! Thank you.

[@realestateinfonet9041]

Very helpful information! Thanks!

[@igwekelechifebian781]

Good day Am febian from Nigeria, I have been following your channel for youtube,and I love you explicit pattern of teaching,pls I want to confirm,what is the value of the zener diode connected to the relay output in control circuit of a microwave oven

[@pizzanpepsi]

FYI I unplugged and plugged back in and now it works. You may want to do this first before starting your troubleshooting. I may have lucked out, or maybe more trouble to come, but at least for now its heating.

[@robinmeade5230]

Larry K your method just worked for me too!! Thanks! 👊

[@earthlingsixbillionsomethi2486]

Is it still working Larry?

[@Susan70003]

@@robinmeade5230 is it still working for you after a year?

[@Celestials1aurora]

Omg you have saved my life 😭

[@gmcbride6306]

GE 2.0 Countertop 9 years old. Sometimes heating. Now not heating. All my parts tested good. With further research I came across the Humidity Sensor connected to control panel and mounted to the side away from main components. This will stop the heating (magnetron) . I don't see testing info on Repair Clinic. eBay had the part $75. Replaced Microwave.

[@sharp65inch38]

Hi! What values should we get on capacitor to understand if failed or not?! thank you!

[@alfredgabriel8075]

Thanks alot

[@agracer1000]

Just tested 1 thru 5 and they all seems to be ok. Microwave made a horrible screech noise and stopped heating. Is is possible the Magnatron will still have continuity as you showed and be bad? Just to be clear, there always no electrical smell and I found another video to test the transformer and it is OK. I could not find any thermal fuses anywhere. Any other suggestions?

[@james77011]

This was very helpful... Now I will fix my neighbors microwave 😃

[@West_Coast]

was it too hard to install a simple self diagnostic in the microwaves...

[@moegasim]

Thank so much for this. Finally managed to fix my microwave. Was one of the switches. Very helpful if you could mention the approximate readings for the capacitor, transformer, heat resistors and magnitron.

[@autovale3595]

How about the Panasonic inverter Microwaves which have the integrated capacitor/transformer/diodes? Are you doing a video on those?

[@VideoNash]

thanks

[@Celestials1aurora]

When it’s not working and your hungry and can’t use the stove …

[@paulb9769]

You mentioned the door cut outs. I was always under the impression that nothing would work if one was faulty?

[@augustinechinnappanmuthria7042]

Super tips 👍

[@Mochi-lf5rz]

This video has 4 "Most replayed" Areas I've never seen more than 2

[@PinkFlowers365]

ty

[@johnage9367]

Very good video

[@repairclinic]

You're welcome! If you would like to give us a review, here is our link: g.page/r/CcVUrahZNozMEBM/review Have a great day!

[@Integrity.is.everything]

My magnetron reading is. 02 ohms. Is this within spec or too low?

[@shanika8]

1. Burned out diode 2. Defevtive door switch 3. Malfunctions and magnetron 4. Defective high voltage capacitor 5. Failed high voltage transformer 6. Blown thermometer fuse cavity fuse or thermiprotecter In other words get a new microwave or become a maintenance man

[@yoimredeemed1022]

😂😂😂😂😂 You are crazy. I'm weak. 👍

[@nishikabyonamro4443]

😄😆😙 🌋🏕🏕🌋🏚🌋. 🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🌋🚘🚘🚘🚘🚘🚘🚘🚘

[@antknee6579]

lol your correct lol

[@MrJCTECH]

😂🤣🤣😂

[@SoaringSpirit1111]

Ding ding ding ! Lol

[@dianewacker]

One of the two thermal switches is a normally open (controls fan) and the other is a normally closed (runs microwave)

[@John-song]

2:51 Thermal Fuse, Thermoprotector, the test results of the two parts different?

[@hectorrivera4347]

About how much is the repair cost aprox ,or better buy a new one ,Thank you so much

[@davidf1985]

My 2003 Whirlpool overhead stopped heating today. The only feasible fix for me is #2, check the door switches. I assume all the parts are different now & an exact replacement part is no longer available. Per online, an oven should last 10 years. I guess I got lucky, getting 18 years from mine.

[@dudekjuve]

fantastic video

[@davejohnson3860]

Nice video, and willing to attempt swapping out parts, but easier to replace my 12+ year microwave.

[@DeeBeesvideochannel]

Older GE microwaves are lasting longer than newer ones. Maybe better to repair than replace.

[@Daniel-tj4fz]

Thanks, the first thing I notice was the connector on the magnetron is kind of melted on and very brittle this thing is only 2yr old

[@TheSargeGaming]

Thank you for sharing

[@TheSargeGaming]

Done

[@TheSargeGaming]

Please return a favor 👍🏻

[@user-rn9gy7uj3j]

i have frigidaire microwave modelffmv162lsa everething worck but the exhaust fan does not turn off low and hight worck but not tur off

[@weslawsonsilverback]

Very good

[@jzsanchez]

I will just buy another microwave:)

[@fredwild190]

A bad magnetron can test good on the multimeter. It's important to remove the magnetron and inspect the antenna (tip) for damage. It's also possible with proper equipment and safety precautions to check the current through a magnetron. Good video. Thank you.

[@paulb9769]

I saw another video where the high voltage fuse had failed. What could cause that?

[@Celestials1aurora]

Y’all try unplugging it ( close door first ) and plug back and then try. It worked for me.

[@CENTAUR559]

Symptoms: microwave has time, buttons work (except for #3) and functions almost as normal when entering cook time. Once entering cook time, the number counts down. But.. The turn table doesnt spin, the fan does not turn on, and the food does not warm up after it being counted down. Prior to this, for the last several weeks the fan would turn on when opening the door, but it would still turn on when the door was closed and it was set to cook.. but that fixed itself and it started working fine. What could it be? Fuse would mean the whole thing wouldnt work, right? the fact that most things work except for the fan, heat, and the turn table seems like it should be specific.

[@sdas200]

Sir, diode, door switch & board testing is not clear properly. Do you explain it elaborately. Thanks

[@MaykoElLocote]

3:38 too late, house blew up.

[@new-knowledge8040]

With the parts that I removed from an oven that was placed at the curb to thus be picked up and deposed of, I replaced the door micro-switches, and the AC main fuse. That got the oven up and going again. Total repair cost $0.00. The plate rotate motor also died at one point, so I took the motor apart and repaired it. Total repair cost $0.00. This 2004 stainless steel oven of mine was a demo oven, or so they said, and so it only cost me about $40. In truth, it was not a demo, butthe keyboard was only half working. I fixed that by cleaning the keyboard connection contacts. Total repair cost $0.00. 2019, and this baby is still running and still looks almost brand new.

[@TomNouri]

NEWKNOWLEDGE have u tried baking yourself a cookie in it :D

[@new-knowledge8040]

​@@TomNouri Not quite sure what you mean. If it is a response to me sounding like I am bragging a bit, well years ago I slowly fell into a semi-coma state across an 8 year period, then I spent another 8 years relearning and recovering after the cause of the problem was discovered. In turn, I am very familiar with what was experienced by many other poor folk as was covered in the movie "Awakenings", staring Robin Williams, Julie Kavner, Ruth Nelson, John Heard, Penelope Ann Miller, and Max von Sydow. Other than that, despite being a high school dropout, and a once dementia victim, I did manage to independently discover the phenomena that is today described in Einstein's theory of Special Relativity(SR), and I also independently derived all of the SR mathematical equations. Not bad for a once vegetable person. So I am kind of proud of any of my achievements these days. Check my YT videos.

[@strumpeteer]

Glad this video helped you fix your microwave and saved you $$$.

[@norabuenaventura4497]

That's great thanx a lot God Almighty One reward you goodness in this life and hereafter amen

[@brittanyklosterman573]

We broke our glass tray in the microwave and tried to use the microwave without it and now our microwave does not heat anymore? Which parts should we troubleshoot for replacing?

[@Quills15]

They literally just told you. Smh

[@LostKin69]

Lol the warning for the high voltage capacitator came AFTER the part about it, instead of before. Hope everyone is okay

[@SoulFire209]

I think my problem is that my whirlpool microwave is 2 years old, which is how long they are designed to last. Maybe I should go to a thrift store and buy a 20-30 year old microwave which probably still works fine. ha.

[@jp040759]

You are correct. Far better built. Mine is from 1984 and I had to re-solder cracked solder joint on relay connections on control board this past summer and that is the only thing that failed since 1984.

[@Mrsjam96]

Aha!!!! My microwave is just a year or 2 old and quit heating. Everything else works fine except for the most important part! ! Piece of junk!

[@SoulFire209]

@@Mrsjam96 Well the whirpool tech who came to my house, spent about 5 minutes looking at it and then gave me an estimate for $550 to repair it! I paid $450 for it. Wow. So, he told me to call whirlpool, the first person wouldn't be helpful, ask to speak to a supervisor, and then hope they will actually cover the repair. They covered the parts so I still ended up paying $230 total to have it repaired.

[@JP-rf7px]

Microwave starts, runs for about second. Light, turntable, magnetron all start. Then after a second shuts off. Display says XXXX for a few seconds and then 0. For a while it would do this intermittently, but now all the time so can't use. Possible problem?

[@TheDUTYFIRST]

OK. I had enough. 60 dollars at Wal Mart for my RV microwave is way less headache than this, but thanks for the video.

[@robertzachman-tisca1303]

0:42 He is measuring resistance of a diode in series with a battery... The kind of guy that would measure the amperage of a wall socket 'cuz maybe it doesn't have enough power

[@user-km5mu7mg6x]

No I was looking for why my soup surface is hot while inside was cold

[@KaseyBadwell]

It doesn't hurt to mix a small amount of water in, also useing a more shallow container helps the distribution of heat.

[@Og.dee1k]

I just wanna eat my hot pocket man😐

[@JahRootsRadio]

🤣🤣🤣🤣 that is funny

[@ARedMotorcycle]

Eat an icy one. It's delicious.

[@mozee01]

u dont need a battery to check for continuity. Use the meter

[@joaquinfernandesgarcia996]

1 - Burned-out diode 2 - Defective door switch (or switches) 3 - Malfunctioning magnetron 4 - Defective high voltage capacitor 5 - Failed high volatge transformer 6 - Blown thermal fuse, cavity fuse or thermoprotector 7 - Defective main control board

[@joaquinfernandesgarcia996]

When a transformer fails, it will often arc and produce a burning smell

[@rezzer7918]

⚠️: MW-Oven +🔧= ⚡️+ 😵

[@francisnesta3411]

A fan and the inside light stay on all the time unless the door is open. Then only the light stays on. Food heats fine. Just can't get the light and fan to be off when the door is closed. Tested all three door switches and all passed.

[@parvinamiji49]

👍

[@stevesibaja3123]

I'm going to switch from my old Diode to a new Diode from my General Electric Microwave

[@CreatingExcellence]

Did this solve the issue?

[@stevesibaja3123]

@@CreatingExcellence Yes it works

[@ThatKoukiZ31]

I did not know that 110v to 5000v is doubling the voltage. Interesting.

[@barbarataylor8084]

Me too😘

[@noelv1976]

I tried that 9 volt battery test, and it's not working correctly, even with a new diode. Not showing any continuity 🤨

[@Dr.Kornelius]

I turned it off and on again and fixed it

[@ForbiddenChocolate]

I wish that had worked on mine 😕

[@saywhat23]

So basically buy a new microwave

[@stephensnell1379]

You can't keep doing that when s part fails or malfunctions

[@paulh6591]

Suppose the microwave is part of a three thousand dollar wall oven? The 12KV, 500Ma diode costs three bucks. Why send a microwave to the landfill for want of a cheap part?

[@ARedMotorcycle]

@Paul H Because replacing the part is a potential hazard.

[@MattVarner]

I can't find anything anywhere that will tell me why the turntable turns, but the microwave doesn't heat anything...and it won't turn off unless it's unplugged.

[@Sky-wb9ci]

Complicated... Better to buy a new one. Thanks.

[@Integrity.is.everything]

It didn't say how to test the transformer

[@KaseyBadwell]

They stated it often sparks visibly but there's a chance it could be on the side you can't see and it might not at all.

[@OriginalMergatroid]

How does half wave rectification double voltage? How can you increase voltage without amplifying? The transformer is increasing the voltage, the diode is just half wave rectifying it. I mean, unless someone can show me the math proving half wave rectification will increase voltage.

[@channelview8854]

It's very common in electronic and been done since the earliest days of radio. Basically, you charge two or more capacitors in parallel with the rectified AC. When the AC wave reverses, those capacitors are discharged thru diodes but they are in series because of the circuit configuration. It's possible to have 2X, 4X, or pretty much however much multiplication you want. Because there is no free lunch, current output is inverse to voltage multiplication minus minor losses in components.

[@gringodesarita2606]

Not economically viable, unless your microwave is in Costa Rica, where they sell for triple the cost in the US…

[@almaghrabee]

Long story short buy a multi meter and check every component and replace those that are faulty. Always unplug first.

[@adamcallan6600]

Sees 5000 volts Buys new microwave instead

[@mr2ti41]

Can someone please fact check this statement by my home warranty company: "Ventilation filters were too dirty (with grease) causing your magnetron to overheat and go out." Needless to say they will not cover any repairs due to poor maintenance. Does the magnetron even rely on the vents for cooling?? This is for an over the range microwave. Thanks in advance!

[@SoulFire209]

The goal of a home warranty company is to never pay any of your claims. They rely on mountains of fine print and want to blame you for any issue that arises. That's how they are profitable. Your only options are to argue with them endlessly or cancel your contract. In my opinion and experience, they are never worth it.

[@hadijaabdi4515]

Mine works at night only what could be the problem is settings

[@repairclinic]

It sounds like the microwave is working intermittently, it could be a tripped thermoprotector or defective thermostat. Could also be the touchpad, control board, or magnetron. You're going to want to troubleshoot these parts to see if they are faulty. Double check your socket wiring to make sure it is getting power.

[@refntx5562]

Can you now, post the seven reasons my toenail clippers stopped working and how to repair them?

[@sifarcher]

Idiot, turn your brain off and start a craze for all the lemmings out there

[@danielthan44]

Point being buy a new one 🙄

[@shermanhofacker4428]

HOOKS STICKING OUT THE DOOR IS A DUMB IDEA! I assume the designer had a warped sense of humor and enjoyed thinking of how many people, removing scalding liquid from the oven, will be splattered when the vessel catches on the hooks.

[@user-cd1ue1bh9z]

Microwave makes noise sparks

[@sdas200]

In Microven food is not heating but the utensil is heating & a sound comming, what is the reason,,?

[@jasmingreen2195]

Sujit Das Don't ever put utensils or anything metallic in micowave. Your micowave would explode.

[@sdas200]

@@jasmingreen2195 but we use metallic utensil

[@bobtreduis2737]

That’s why your microwave broke, don’t put anything metallic into the microwave. How are you even alive? You seem like someone to eat the silicone beads in packaging.

[@emy840]

The metal will reflect the wave and can arc with the panel and burn a spot on the inside wall. It had happened to me. Just don’t add metal inside the microwave oven.

[@thomasmendez1843]

Sujit Das that’s make no sense lol

[@scoopdecoop]

It will be cheaper to buy a new microwave than get my electrician to fix it 😪

[@civillady13]

My microwave runs and sounds like normal and the turntable moves but the food item such as a cup of tea on high is barely warm. Any ideas what could be wrong?

[@falcon81701]

sams issue here. Everything is working except food or water is not heating. Did you figure out the problem

[@civillady13]

Not really. The heat is working a little better but not where it should be. The microwave is about 18 years old.

[@falcon81701]

Mine is the transformer fuse. Need got go buy one. Hopefully the transformer is not dead.

[@Scjon03]

Yeah after trying all these parts and the headache. I just got a new one. Smashed the old one because don’t want someone else to make it their treasure out of my own expense.

[@hiz-n-lowz1577]

smash it to ensure it ends up in a landfill! you are great, nicely played!

[@supernova622]

You don't want someone else to take the time to fix the thing you didn't bother fixing?

[@Scjon03]

@@supernova622 of course I don't need someone to fix it and benefit off of me. Not your money. I can't wait for parts to show up need the microwave now

[@sifarcher]

Idiot, recycle reuse reduce. Idiots like you add to the destruction of Earth. Wake up and turn your brain on, it may not be too late, then again.....

[@gmarco98248]

the reason my microwave was not heating turned out to be that it was on [Demo Mode], that's something to check out, I was ready to buy a new one. Save me a few hundred dollars.

[@antknee6579]

says clock runs faster if on I think used stopwatch was normal I guess

[@joycelynbell1434]

My turn table doesn't turn and there's no heat...how do I check this demo mode?

[@ChrisOnvo]

whatever, ima just buy a new microwave 💀

[@Crayoneater536]

Ares just broke my mama finna be mad

[@mikymike1820]

Long story short, unless you do it by yourself, it's completely not worth it to hire professional help

[@maryrich9260]

Why all that bother, get a new one…

[@uzayyamanyigit6329]

No worries i will explode 1.000.000.000 tnt in Minecraft and use my laptop

[@cubeweaver]

Just throw away and buy a new one. Microwaves are cheap now

[@stephensnell1379]

That's not good as it also costs money to constantly do that replacing the defective part(s) will cure any problem