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LG Microwave Oven With “No Heating Symptoms” Now Repaired

By Jestine Yong on December 26, 2020

I received this microwave from a customer with no heating symptoms. According to the customer it is a small problem since the machine seems to be working well. Microwave fan, bulb and the front keypad seem to be working well and setting cooking time is okay.

After setting the time you press the start button and the count begins to the end.

You open the door slowly and carefully but after checking the load(water) you find it is still cold.

From my experience this problem is usually caused by failure of one the High Voltage circuit component which includes, High voltage transformer, High voltage capacitor, Magnetron, High voltage diode.

After checking these components, I found them all okay and now was left with one alternative. You can learn more about the microwave oven high voltage circuits and how to test the components in my latest book being sold at amazon here

To change the magnetron directly.

After changing the magnetron I re-assembled the oven and now the machine was working perfectly well.

Note:Unlike other home electrical appliances, microwave repair is the most dangerous, both to the user and service personnel so it is very important to observe safety measures when working on this gadget.

Thank you friends

Stay safe

Humphrey Kimathi is from Nairobi Kenya and he has just launched his new book “microwave oven repair made easy”

You can also checkout his other ebooks below:

1) Lcd-Led television repair guide

2) DVD Player repair guide,

3) CRT Television repair course and

4) Basic Electronics course.

He is also a blogger at Electronicsrepairmadeasy.com

Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments. If you have electronic repair articles to share with us, please contact us HERE.

P.S- If you enjoyed reading the above article, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. You can also forward this website link to your friends and colleagues-thanks!

Note: You may check out his previous post in the below links:

https://jestineyong.com/55-inch-curved-led-samsung-television-model-ua55mu7350k-came-in-dead-now-repaired/

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microwave oven repair

13 Comments

Albert van Bemmelen

December 26, 2020 at 6:35 pm

A quick and to the point repair! I guess that the customer just had to wait a few weeks before the replacement Microwave magnetron element had arrived. Having these exact same parts in store is usually not the case.

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- Humphrey Kimathi
  
  December 30, 2020 at 2:18 am
  
  Luckily we have them in the market here in Kenya Albert.
  Regards Humphrey
  
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  Reply
Parasuraman S

December 26, 2020 at 8:54 pm

Well done! Your quick reach to the trouble making component shows your expertise and sharp focus on causes!

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- Humphrey Mndaka
  
  December 30, 2020 at 2:20 am
  
  Thanks for your feedback my friend Parasuraman.
  
  Regards Humphrey
  
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  Reply
Babu M S

December 26, 2020 at 10:36 pm

Fantastic it shows your expert in microwave oven repair works. Thank you very much for sharing.

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- Humphrey Mndaka
  
  December 30, 2020 at 2:22 am
  
  Thanks and Welcome Babu.
  Regards Humphrey
  
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Humberto

December 27, 2020 at 10:41 am

Good repair. Congratulations.

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- Humphrey Mndaka
  
  December 30, 2020 at 2:23 am
  
  Thank you Sir Humberto.
  
  Regards Humphrey
  
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  Reply
suranga bandara

December 27, 2020 at 12:45 pm

Good Job..Mr.

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- Humphrey Mndaka
  
  December 30, 2020 at 2:25 am
  
  Thank you Mr. Suranga
  
  Regards Humphrey
  
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Yogesh Panchal

December 28, 2020 at 2:59 pm

Good job! Sir

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- Humphrey Mndaka
  
  December 30, 2020 at 2:26 am
  
  Thank you Yogesh sir.
  
  Regards Humphrey
  
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  Reply
Tito Kanshulu

January 4, 2021 at 9:09 pm

Quite to the point Mr. Kimathi. Nice to hear one story from you

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