No Power In Samsung LCD Monitor- Model LS22cmzkfva/zw

By on October 16, 2017
how to fix and repair lcd monitor

 

 

 

 

 

 

 

 

 

A guy brought this LCD screen to my shop. It was completely dead. He guy explained that it was sitting in his shop for more than two years.




He cleaned his shop and found this screen and decided to get it fixed. Was it worth it? Let us see.

no power in lcd monitor

As you can see, it is 22 inch screen and it is made by Samsung. I really love this brand name because it is quality and that is why I decided to give it a try and get it fixed.

When powering up the LCD screen there was no indication of any life left in it. Took the screws off and gently took off the cover.

lcd monitor repair

It was clean. I did not expect it to be that clean and that is a very good sign.

how to repair lcd monitor

Upon taking the metal cover off, a spot got my attention and I am assuming it was a burnt area. I believe it was the cause of heat generated from the power supply area and its surroundings.




I got a closer look and that what I found after cleaning and rubbing the connection.

repair lcd monitor

As you can see, it was a cold soldering joint and that joint was loose.  I had to put it under my microscope to see that loose connection.

After cleaning the area and soldered that joints, I could see the stand by light coming on. I pressed the power button but the screen did not come on.

lcd monitor fix

Upon checking that power button, I noticed it was not sitting right in its housing. I fixed that issue and also spread some cleaning spray on it. Pressed it again and look what happened. It is alive again.

how to fix lcd monitor

Mission Accomplished.

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.




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Note: You may check out previous post in the below link:

http://jestineyong.com/ap2764ai-fet-shorted-in-dell-lcd-monitor/

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5 Comments

  1. Robert Calk

    October 16, 2017 at 2:02 pm

    Good job, Waleed. I don't know how I managed without a good microscope.

    Likes(1)Dislikes(0)
    • Waleed Rishmawi

      October 16, 2017 at 2:25 pm

      Microscopes are just amazing. yes expensive but worth it.

      Likes(1)Dislikes(0)
  2. Parasuraman

    October 17, 2017 at 12:14 am

    Well done!

    Likes(1)Dislikes(0)
  3. Yogesh Panchal

    October 18, 2017 at 4:58 pm

    Good job ! Waleed

    Likes(1)Dislikes(0)
  4. Menahem Yachad, Jerusalem, Israel

    October 24, 2017 at 12:50 pm

    Good work, Waleed!

    Likes(0)Dislikes(0)

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