Purple Color In CRT TV Repaired

By on November 14, 2017
purple color in crt tv

 

 

 

 

 

 

 

 

 

 

One day one of my friends called me up and stated the problem as mentioned below:

purple color problem in crt tv

On his call I have visited his home while back to home from the work and I have turned ON the TV; getting exact symptom as stated. So first I have checked signal cables which come from Set top Box found ok. So now it is time for operation.




So I have opened the TV for further diagnosis and started visual inspection – till nothing found like physically damage or burnout parts. So I have started troubleshoot from the CRT Base PCB, with help of screwdriver handle I taped on the CRT base PCB & I have got positive sign of suspect, for a moment screen got clear image and turned back as it was purple.

crt tv repair

That means there is some loose connection. So I have removed the CRT Base for inspection.

how to fix crt tv

On visual inspection everything seems to be Ok on component side.

Finally I took out my magnifier glass to inspect on solder side of the PCB and I Have found lots of dry soldered points through my magnifier glass.

dry joints

Now it is time to revive the solder joints on suspected area.

crt tv fix

After Refreshing the solder I have attached the PCB on its location and power ON the TV and see the result. Yes problem solved.




For reconfirmation about fault I have again taped the area with help of the screwdriver handle I found this time it is firm.

how to repair crt tv

 

This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.




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Note: You can check his previous repair articles in the link below:

http://jestineyong.com/samsung-laptop-r418-suddenly-went-off-without-any-error-on-the-screen/

 

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12 Comments

  1. Parasuraman

    November 14, 2017 at 9:49 pm

    Excellent!

    Likes(1)Dislikes(0)
    • Yogesh Panchal

      November 21, 2017 at 10:23 pm

      Thank you sir,

      Likes(0)Dislikes(0)
  2. Robert Calk

    November 14, 2017 at 10:13 pm

    Good job, Yogesh.

    Likes(1)Dislikes(0)
    • Yogesh Panchal

      November 21, 2017 at 10:24 pm

      Thank you Sir.

      Likes(0)Dislikes(0)
  3. Joop

    November 14, 2017 at 10:13 pm

    good Job
    Thanks

    Likes(1)Dislikes(0)
    • Yogesh Panchal

      November 21, 2017 at 10:25 pm

      Thank you Joop

      Likes(0)Dislikes(0)
  4. angelo

    November 15, 2017 at 4:51 am

    thank you
    my crt tv has same problem
    but there are no dry solders
    what do i do now ??
    thanx in advance

    Likes(0)Dislikes(0)
    • Cyril De Zoysa

      November 15, 2017 at 8:32 am

      Remove the CRT base from tube and check colour out put transistors and near by components.

      Likes(1)Dislikes(0)
      • Angelo

        November 18, 2017 at 3:01 am

        Thank you
        Cyril De Zoysa
        is there any way to figure out that which one is green transistor?

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        • Cyril De Zoysa

          November 19, 2017 at 10:23 am

          Yes, Check green output.

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    • Yogesh Panchal

      November 21, 2017 at 10:26 pm

      Angelo,
      Hope you got the ans.

      Likes(1)Dislikes(0)
  5. Angelo

    November 26, 2017 at 11:14 am

    Thank you sirs
    i'm a newbie
    that's why it takes time for me to understand..
    Thank you

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