How to diagnose and repair microwave oven | how to check capacitor diode transformer and magnetron
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- Опубліковано 29 сер 2024
- in this video we talk about how to diagnosed the microwave oven and repair it. check the capacitor diode Magnetron and transformer correctly. if you are going to repair your microwave oven As a homefix, watch this video from the beginning and, discharge High Voltage capacitor in your oven before touch any other component inside. because this high-voltage capacitor can bring deadly High Voltage electrical shock even after disconnect The oven from the wall power connection. please be careful and study first well described video tutorials before open a microwave oven.
You are an excellent teacher. Thank you very much!!
Good morning excellent explanation
This very practical test procedure is very clear and concise. Well explained and effective. I especially appreciated the concept of continuing testing all main parts if a fuse is found bad. As in all electrical work employing fuses or breakers, there was most likely a reason (failure of a main part such as condenser, diode or transformer) for the trip or blown fuse. Very well done. Thank you!
Thank you very much, through your video I discovered a shorted magnetron.
Well done and thank you for your effort and knowledge you share. Repairing a micro and with your instructions I found the fault , a faulty capacitor. 👍
Fantastic and well articulated I will definitely try to repair mine when I buy the tester....thanks very much
Sir u r very expert thanx a lot for sharing your knowledge God Bless You
Ravi, you did a fantastic job on this video! I will use what you taught me, to repair my microwave oven - thanks!
Thank you
Warning!
You are going to work with High voltage.
Safety first.
All the best.
Very well explained,with clear visual and demonstrations...thank u
Thanks a lot. Your video helped me to diagnose the faulty microwave at home. Our 4kv glass fuse was gone. Good simple English.
I' m here on Brazil fixing may my mcrowave with this great tutorial, thanks Ravi!
Do u buy bitcoin in Brazil?
Thank you! Well done. You helped me troubleshoot my Microwave. Very good instructions!
The video is outstanding. Thank you very much.
Cheers
One of the best step by step troubleshooting vid
Best video and the way of explaining superb ...
Thanks for this tutorial. Well and clearly explained.
Very elaborate explanation and easy to understand
This is a simple test practical with correct understanding
Nice one
very good video very well explained the capacitator fixed mine
Weldone Ravi and excellent information
Very good video, well explained covering all safety precautions to be observed failing which, can cost yr life. Thanks bro 👍.
Simply explained very well, 👌👌
This is the best video. Thank you!
Thank you for the update 👍
Well done bro.. lot of thanks to you
Awesome Explanation! 🙏😊
Sir,if check only continuity of transformer,if it's short it also give beep, check resistance in 200ohm, and and other checking perfect ok my dearest brother,I know your language is Malayalam, you are very good 👍
Good way of explanation
Knowledgeable video sir. Thanks
Thanks! You very help me for check diode .Good video ! 👍
Awesome video. I found the capacitor to be bad on mine, shorted between the two terminals. Fuse blew and monitor switch was recommended (per a sticker on the inside) to be replaced with the fuse, so that'll be replaced also.
Great great stuff and well explained my friend.
Very, very good perfect explanation sir,but what should be the resistance of a good magnetron,in low resistance mode, continuity ok,but should check resistance also,is n't. thankyou very much 😊
Thank you Ravi Fix for the informative tutorial. I checked every thing in my LG microwave oven using a multimeter. These are my observations. I used continuity testing. Diode is OK, HV capacitor is OK, all the fuses are OK including the thermal fuse. Magnetron is OK. Door switches are OK. HV transformer is OK except for (I am not sure) the high voltage terminal connected to the HV fuse going to the HV capacitor. There was not reading or a beep at this terminal. Microwave oven operates, but it does not heat up the food. I also cleared the front dial. What seems to be the problem? Thank you for your input.
Sometimes microwave magnetron has short circuit under voltage.
I just went through Ravi’s video and followed every step. Turns out that my problem was the high voltage 0.9A fuse had blown. I could immediately tell because that fuse has a spring inside and the spring wire was broken with the spring no longer stretched inside the fuse. Everything else tested okay. I’ve ordered replacement fuses from Amazon. A $0.50 fix. Thanks Ravi.
So so Wonderfully explained Sir.. U just earned a subscriber +1..keep up with the great work
Great info.
Awesome explanation! Thank you.
Good explanation of microwave.
Excellent tutorial. Thank you
Good work ❤️👍
Hats off Sir
You are very good technician but only one thing yoo forgot is to check door switches
Soo clear and precise thank you chief
Excellent video. My Panasonic inverter Microwave blows fuse while sitting idle. Sometimes after one hour and sometimes after one or few days while door stays closed. I checked all parts are ok and the microwave works good while fuse is not blown. Please give your comments. Thanks,
Very good informative video
Thank you for the reply. I guess you are right. I suspect that the thermal fuse and the line fuse blew. rather than the capacitor. I will attempt to fix it myself. My first step is to identify the types of fuses and buy them cheaply. If after replacing the fuses it still blows then i will have to change my capacitor etc.
for now I just want to confirm that any 20 amp 250v ceramic slow burn line fuse of the same dimension can work?
Thanks!
Great video! Thanks!
Thank you bro
Nice safe start ... then safe fail by using dead short on capacitor. Damage cap & tool and create explosion risk !!! Use a large resistor for a few minutes then check the voltage. Then do it again. Then don't die ; )
Very good, thanks
Tnakita sir 💯👍
Nice
Oh,ich glaube das es dir Spass macht solche Videos zu erstellen😎😎😎
Very well done...thank you Ravi!
🤙 Weell done...
thank you 😊 Sir thank you very much 😊❤️
Thanks
Hi Ravi,
Thanks for the video was really informative. I have a microwave which have blown fuse. Tried replacing and running it and blew the fuse as soon as tried to run it.
I checked all the other components and could not find any fault with any components. The only thing is I can't find another high voltage fuse between transformer and capacitor.
Also when testing the capacitor, do I have to remove the diode and resistor which is attached to the capacitor.
It might be transformer
I had the same issue. Fuse blew instantly, repeatedly. I tested everything, with the help of the video. There was no fuse between the transformer and the capacitor on mine, either. Then, I unplugged everything from just one terminal on the capacitor and found my capacitor to be shorted between the terminals... which is bad. I did not remove the diode (no resistor on mine) from the capacitor, as that was the side with more items plugged in. I left all connections on one terminal, removed the capacitor from the microwave, and freed up one terminal on the capacitor free of any connections.
Then, I used the flux capacitor, and I went back to the future... ok, just kidding. I then ordered a capacitor, because I need my microwave now, not later/future. I'm not going back to the future, I am staying here with my microwave and its new capacitor.😂
@@copperkeyracing6167 in my case it was actually the magnetron that was blown , however I did not know how to test it. Once replaced that working all good .
Excellent video.
Model MG7040NWR, microwave 1350w, Grill 1250w, conversation combination 2650w, originally in ac income supply 12A 250vac. Original fuse white type but now available glass type in market is glass type fuse suitable for above mention. Give suggestions thanks..
If same amperage doesn't matter glass or ceramic. Ceramic fuses are more safer when it blow. Glass fuses are harmful when it blow.
Super
Excellent
Very good
Please a video on how to fixed washing machine all part
But still a good video mate 👍👍
how to make sure that capicitor is dischare completely? is there any other equipment to check capicitor?
Nice information thanks.
very nice thank you.
❤
awesome
you did mention very precisely how the red and black lead to placed to check continuity. in some parts you place right leas on right and in some parte red lead put on left and vice e versa. do make it clear to the viewers.
I have done all the checks and every component passed but the microwave is still not heating. What could it be?
Hi. I have a microwave . its blast 5kv fuse some time . all components are ok and fine conditions
Check all the components as described in the video.
Sirji, I have GEC microwave table top. While plugging current does not flow and front panel no light. I have checked with multimeter transformer. magnatron, capacitor, diaod, fuse termostate, all ok. I have also checked main cable,it is OK.I have not checked PCB and it is bit complicated. Appreciate if you could response. I am in CHICAgo, USA and here it is 120V.
The diode is used as part of the voltage doubler, not solely as a means of discharging the capacitor. Also, you did not explain how to test this diode, which is a high voltage diode, and cant normally be tested in the usual way like a lower voltage diode. You need a higher test voltage to forward bias the diode while testing. Hope this is helpful...
You're right Richard! The diode is for the voltage doubler and it's not for discharge de capacitor
Are all magnetrons standard in power, voltages, watts and ohms, etc., and can be used as replacements in any microwave oven?
I'm trying to repair my microwave oven which is just about 2 years old, and the magnetron has stopped working. It's one of those that has a static (hot) plate - not the rotating kind. Can I use a magnetron from a rotating plate microwave oven to repair mine?
And also to check TT table motor
for top fuse you put red wire point of multimeter on left and for bottom fuse you put red wire on right. what if is vice versa? is it dangerous?
what if soldier point is not there on transformer then ow to check?
Peace be upon you, teacher. I want to ask you about the microwave does not heat up. I changed the fuse, changed the diode, and checked the capacitor, it was good. I checked the micromagnet, it was good. I said, maybe the problem is from the transformer, but the transformer when measured it looks good, but when you run the files inside it, it gets hot and when the transformer watts increases. Coming out of smoke and smell
Hello sir if we get 75.4ohms between HV terminal and body. Is it good or bad
Bad
Hi, Do all microwave use 15-20amp ceramic line fuse? i have a sharp carousel microwave that uses a 20 amp. It blew when I attempted to cook rice in it. It can been over 1 year. Can I buy any 20 amp ceramic fuse to replace it?
Thanks
Most microwaves use 15 to 20 amp fuse. Before replace the fuse, should check the issue why blown the fuse.
My microwave panel on has a few touch buttons working help fix it pls
What about is the capacitor is not reading with the body is that mean the capacitor ok or bad
Might be open circuit.
Where ur u from
Sir, I have a LG CONVECTION Microwave I think it takes high current when switching on immediately ac fuse glow but it microtone ok capacitor on test multimeter seen ok diode test with battery it ok what to do. Give suggestion. Thanks
first of all if it is not possible to find something, highly recommend please get professional person assistance.
Check for corrosion or oxidized on wire connection. Duble check transformer, Make sure you have replaced right amperage fuse.
Hi Ravi. My microwave is not working ( only grill is working , not microwave ). The two fuses are OK. I was in doubt with the HV diode, i bought a New diode but nothing. All misures on the capacitor, the magnetron, the HV transformer are OK like your method. I rally dont understand what is wrong with this microwave!!!!
This could be faulty high voltage capacitor. We can mesure it with multimeter if only shorted. But open circuit no any mesurement for normal multimeter. Try to mesure the capacitance with a good multimeter which support for it. Otherwise if it is not expensive for you just replace the capacitor.
Thank you Ravi. You are very professional !
Can i measure the capacitance of capacitor with a normal multimeter ? My multimeter has capacitance measurement. What capacitance should i read? I suspect on capacitor because no electric dishange was when shorted the capacitor
also is there any difference between slow and fast?
I'm not clear on how did you do the high voltage diode testing. Using a 9V battery ? 🤔
I have clearly mentioned in the video that we need a bit higher voltage source to check this diode. Because due to high resistance in the diode, it has a voltage drop. If you use small voltage source like AAA battery, you will not get any reading. Because entire voltage drop in the diode.
Hope you understand.
My high voltage capacitor reads 20 megaohms from terminals to chassis is that bad
Hi I have one maicroweve oven ..this one we put 30 second it working and suddenly off and auto matical one agein .some time work some time not work
does all transformer had soldier pont on top edge?
all transformer do not have spot for checking continuity.
Bhai 1 ovan ki Samaj nhi aa rhi fault ki..saray parts chk kiy sab the hen.. megnitron bi change Kiya..campisiter or diod bi Chang Kar Kay dekha.. transformer bi body Kay sath spark Kar Kay chk Kiya wo bi thek hai..switch bi thek hen saray.lekin ovan phir garam nhi Kar rha
Which wire is F and FA on magtron contecter?
How do you discharge the transformer and magnetron?
The don't need to be discharged, but the condensator. Considering your knowledge in the matter, I'd suggest you not to repair by yourself
Help….. my GE microwave does not beep after cooking . How can I repair it? Thanks
May be bad buzzer or some microwaves have option to turn off the beep. Read your user manual.
Did read the manual. Will work sometimes most likely switch are going bad.
most of the transformer do not have soldering
for checking the fuse you did not mention the precise way of connecting the two pints of multimeter whether red should be on left and black on right or vice versa for both fuse. you just display but did not mention the precise way of placing both the points of multimeter. what if placed wrong?
If you discharged the high voltage capacitor properly, then you don't need to be afraid to touch or check any component. Please follow the procedure explain in the video beginning. To check the fuse no matter polarity, it is just continuity test, you can use any lead to any side, carefully look for a conductive point on the transformer body to chek continuity, should be somewhere around, try it to find it by touching the multimeter lead.
When all it test is right lik I follow u step by step but still it doesn't heat wat could be d issue
Did you check the high voltage fuse and 220v fuse.
@@ravifixall one the fuse is blown but the other microwave as no fuse
@@ravifixall when I on the microwave the magnetron brings spark at the plug terminals