A TV Powers On But There Is No Display Repaired
I got an email from a subscriber (Menahem) to Jestine Yong web site about a TV that he wants to donate because the customer who owns this TV did not accept the repair quote; I accepted the donation and we arranged to pick up the TV as soon as possible.
This TV powers on just fine but has no display which is a very clean indication that it has a faulty back light.
To be more sure about the fault, I powered on the TV and then with a flash light on the display I could see the LG logo coming on; let the repair begins.
I took the back cover off and started dismantling the TV piece by piece and being very careful around the display panel because it is very fragile.
The display was carefully taken out and was put in a safe place and then continued with the dismantling of the rest of the pieces on this TV.
Finally I got to the back light strips and right away I could see all the diffusers already fallen apart and needed replacement.
After finding out the model number of such LED strips I was able to get them in a local shop for cheap so one thing left to do is to install them and see the outcome.
As seen brand new LED strips were installed successfully.
I put everything back together…take a look
It was an easy process of replacing the LED strips but I always get nervous when I take the panel off for it is a very fragile part and it could break while dealing with it.
Anyway, the TV is up and running and to that I could say
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 can check his previous article on A Dead UPS Device Was Brought Back To Life
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Parasuraman S
November 23, 2024 at 4:29 pm
Excellent work! You are right about handling of LED panels! It is very fragile and a little bit of carefree or careless handling would cause a break! Thanks for sharing, dear friend!
Waleed Rishmawi
November 23, 2024 at 5:21 pm
Parasuraman: thanks man. I do not like hanndling panels, I have broken a few before so I do not want it to happen again. thanks for your commments and have a blessed day
Albert van Bemmelen
November 23, 2024 at 4:31 pm
That indeed is the biggest worry of all tv repair engineers! Opening without breaking the very thin glass panel and replacing all diffusers falling off. And afterwards carefully putting everything back together again. Glad that you managed to that successfully!
Waleed Rishmawi
November 23, 2024 at 5:23 pm
Albert: yes indeed because I have broken a few before so I always get nervous when I open one. I was super careful but sometimes things happy..thanks for your comments and have a blessed day
DougIa
November 23, 2024 at 4:36 pm
Thanks a lot am learning a lot from you thank
Waleed Rishmawi
November 23, 2024 at 5:24 pm
Dougla: you are most welcome and I am glad you are learning from the articles..thanks is such an encouragement to me. have a blessed day
Tito Kanshulu
November 23, 2024 at 7:14 pm
An excellent repair article Waleed. It is really with care when handling the panel itself. All in all, the job was well done
Waleed Rishmawi
November 25, 2024 at 2:39 pm
Tito: thanks man. have a blessed day
Tayo
November 23, 2024 at 8:35 pm
Good repair Waleed. I do this repair regularly. I once tried to reglue those fallen diffusers back on with clear adhesive but the glue wasn't crystal clear and you could see artifacts after the repair. Good experience though!
Waleed Rishmawi
November 25, 2024 at 2:41 pm
Tayo: thanks man. these diffusers has to sit the normal hight otherwise it will be seen when the TV is on. they eventually fall down so mindswell just just replace the whole LED strips...have a blessed day
Zaheedi farjan
November 23, 2024 at 8:41 pm
Dear Waleed sir
Am zaid farjan I have an issue with a 32 inch sony bravia model klv32bx300.dead set.i first I check power supply ok I must say that when set is plug on no display no led light display or white. Completely dead.i check voltage on m board. I got its 5v 3.4 12.7 1.8 1.1 too board ok.on the other hand check p supply 12v 3.3 bl but no 3.3 bl off.pls advise.
Best regards zaid farjan.
Waleed Rishmawi
November 25, 2024 at 2:43 pm
Zaheedi: check where the source of the 3.3 volts coming from ( may be a power regulator) and where it is going to then find the fault...it is common sense. have a blessed day
Mark J
November 24, 2024 at 3:48 am
Waleed great job on the repair. Did you ever try the website shopjimmy.com ? They have some good deals on LED back light strips.
Waleed Rishmawi
November 25, 2024 at 2:45 pm
Mark: thanks man. yes I am very familiar with them but I usually buy my LED strips from a local shope here, if not available, I buy them from Ali Express. have a blessed day
Corriette
November 24, 2024 at 6:26 am
it may seem easy but can be a sweaty job because of panel.it is an accomplishment when all is well ir in place and working. Patience is key when screen is involved. Great job!!!
Waleed Rishmawi
November 25, 2024 at 2:46 pm
Corriette: totally agree with you here. not any easy thing to do but when the job is done the accomplishment is rewarding. have a blessed day
corriette
November 24, 2024 at 6:31 am
its satisfying when all is well after screen replacement. it is an accomplishment when after a sweaty job its working. the customer dont know how patient you must be to get this special job done. great job done!!!
Waleed Rishmawi
November 25, 2024 at 2:48 pm
Corriette: not all customers are bad, most of them appreciate the work done because I always inform them of what I did and what the risk is because once they understand what happened they will appreciate it very much. have a blessed day
Yogesh Panchal
November 25, 2024 at 6:34 pm
Good Job!Waleed,
Every repair required workplace and table space as per the size of the Equipment.so anyone can get nervous if surrounding space does not allow or limit the workspace.
there is always risk abounded with these type of repair.
Waleed Rishmawi
November 27, 2024 at 4:35 pm
Yogesh: very true. I have a limited space that can take up to 43 inches TV but no more that is why I am very strict about space beside my son and nephews come very often to the shop so I do not usually take any tv apart unless I am really sure that no ones enters my shop at that time except me. thanks for your input and have a blessed day