Microwave Troubleshooting: How to Diagnose a Microwave That Won't Heat | PartSelect.com
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- เผยแพร่เมื่อ 21 ต.ค. 2024
- There are several reasons why your microwave will not heat, and they all will result in an uncooked meal. In this video, Steve will take you through what these microwave parts are, where they're located, and how you can troubleshoot them.
Do you have a problem with YOUR microwave? Leave a question for us in the comment section below! 👇
Here are the main components of your microwave that could be malfunctioning so your microwave won't heat:
Door Interlock Switches (0:26)
Control Board (1:54)
High Voltage Circuit (3:50)
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For diagnostic purposes, this was the most informative video of the lot!
would not recommend going anywhere near the high voltage cap unless you know for sure its discharged,these caps have an in built 10meg resistor that will discarge the cap slowly after microwave has been disconnected from mains,but if that in built 10meg resistor has failed which is rare but can happen then that cap will hold a deadly voltage that can kill so beware
What about transformer
Best Video ever concerning; How to Diagnose a Microwave That Won't Heat- Brilliant !!! Thank you !
I see you may not be responding to comments on this video anymore but I'll post my situation anyway, just in case. I have a motorhome with a large built-in Samsung microwave. It just started giving me trouble. It acts normal until I punch in the time and hit start. The light in the oven comes on and there is a very faint humming sound, but it's clearly not working , and the turntable doesn't turn
I thought the microwave was toast a few months ago and started using a backup one, then all of a sudden, on a whim, I tried the built-in again and it worked fine. I've been using it all this time without issue until today.
I microwaved a bowl of ramen for 10 minutes. It ran fine, completed the cook time, beeped and I went to remove the food. When I went to microwave something else, it was back to how it was a few months ago when this mess first began.
Is this just overheating? Is there anything I can do to prevent this from happening other than not microwaving anything longer than a few minutes at a time? I don't want to have to shop for a new built-in. I'm not made of money and I'm a 62 year old chick and don't have skills.
You are an excellent professor! I immediately subscribed to your channel!. Great troubleshooting videos for all kind of appliances. Thank you.
I have an LG Inverter Microwave. It is about 6-8 years old and quit working only a year after I bought it. Before it died it would completely power off with no signs of life. Hitting the side near the control panel or hitting the control panel itself with the palm of your hand would cause it to show power again, and you could then start it up and it would run perfectly for a while. It is now completely dead. Not even the light comes on when the door is open. I disconnected and tested all 3 microswitches and they all work correctly when the door opens and closes. I also checked the fuse and it is good. I pulled the control panel apart and saw nothing melted. My best guess is a solder joint on one of the two boards might be bad, but would that completely kill all power to everything, including the display and the light when the door was opened? (I know hitting on it was not the solution, and probably just made the problem worse.) I would not know how to check all the solder joints on the board. Do you have any suggestions? Thank you. God bless. James
There’s often an inline fuse on the magnetron side of the capacitor that can burn out.
Nice vid - thx. One comment: checking the cap terminals to ground found my shorted cap, another failure mode for caps ; )
What if it heats, but not as much as it should? Also, can any of these steps be skipped if lights and turntable are working?
Hey. So my microwave when powered is flipping the fuse box switch. Any ideas where to start please? Thanks \o>
Best, logical and concise video on the subject. 5*
Hi fred..ive got a ge microwave thats not heating...when i click start the fan turns on table turns..i hear a click relay but no hear normal humming sound anymore....i checks diode and is ok...i check door limit switches ok...what other part could be the issue?...the hv cap is not bulged on top
I have the same problem. Did you find a solution?
The only difference is that my fan starts and table turns whenever I close the door, and the only way I can stop it is to open the door.
no sorry..im assuming transformer or magnatron bad ...i never troubleshooted any further because i found another working microwave in trash that im now using...
Hey Steve u could make this a much safer operation if you cautioned people to discharge that high voltage capacitor before taking the reading, otherwise great video!
He did. Wait a few and leave it alone, it'll be fine to check then.
L
This capacitor has a resistor attached that discharges the capacitor automatically when you remove the voltage ( 4:30 )
My SAMSUNG microwave stopped working. It is turning on, plate is turning and light will come on but the timer WON'T count down; and food won't heat. Any idea what this could be? Thanks!
Awesome!!!
why did you not test both thermostats ???
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?
This was a nice video. Very informative, but I had trouble hearing the guy. His volume was low.
Bud just raise your volume , worked for me .
Realy should have discharged the HV cap....
I think you just saved me £300
yes the fuse is fuc@@d if there is no power
I was hoping to find a video where I don’t have to open it 😭
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.
not really the hooks are there to make sure when the door is closed then it will close the switches
by far this man's worst video (I have watched many others and liked them). There is no way to figure & understand how to fix one's MW by listening to his video. First, he uses an analog 1950s meter, then no precautions with the capacitor (unplugging from AC and hope the cap will discharge itself is a deadly assumption). Then flew by testing the capacitor and diode... of which I did not get anything out of. And the volume? Ayaya.... not a good video by any means!