Purple Color In CRT TV Repaired
One day one of my friends called me up and stated the problem as mentioned below:
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.
That means there is some loose connection. So I have removed the CRT Base for inspection.
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.
Now it is time to revive the solder joints on suspected area.
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.
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:
https://jestineyong.com/samsung-laptop-r418-suddenly-went-off-without-any-error-on-the-screen/
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Parasuraman
November 14, 2017 at 9:49 pm
Excellent!
Yogesh Panchal
November 21, 2017 at 10:23 pm
Thank you sir,
Mahesh B Amre
April 1, 2019 at 1:55 am
Thank you Sir
Robert Calk
November 14, 2017 at 10:13 pm
Good job, Yogesh.
Yogesh Panchal
November 21, 2017 at 10:24 pm
Thank you Sir.
Joop
November 14, 2017 at 10:13 pm
good Job
Thanks
Yogesh Panchal
November 21, 2017 at 10:25 pm
Thank you Joop
Abhaya
October 13, 2022 at 1:55 pm
How much its cost
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
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.
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?
Cyril De Zoysa
November 19, 2017 at 10:23 am
Yes, Check green output.
Yogesh Panchal
November 21, 2017 at 10:26 pm
Angelo,
Hope you got the ans.
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
Muhammad Ashfaq
February 26, 2018 at 3:43 pm
thanks yogesh sir for sharing the knowledge.
Ulises Aguilar
April 8, 2018 at 12:02 pm
Mr panchal Grate job Sir
Jets
May 5, 2018 at 4:04 pm
Thanks