In Came This TV As Predicted By An Expert, But For A Ddifferent Reason – IMPEX LED TV GLORIA 32

 

 

 

 

 

 

I request you all to read the article in this link and read our Repair Expert Albert van Bemmelen’s comments under it, which I am reproducing after giving the link:

https://jestineyong.com/a-severe-case-of-surge-voltage-damage-in-impex-led-tv-model-gloria-32/

‘All new made modifications you had to make to fix the issue no doubt will intensify any future repair if this tv revisits you next time’

This TV given out on 29th July, 2024 made a revisit on 18th of January, 2025 with the complaint that there was no display, but sound was ok. As mentioned in my previous article this belonged to an employee who works in the grocery shop opposite to my house and I had a social responsibility too to attend to it on priority as they do not have any other entertainment in the house and moreover, this guy was too nice, calm and composed to deal with. I had gone out to attend a meeting and his sons were waiting for my return to hand over the TV. I suspected backlight problem and quickly removed the back cover and checked and found that the voltage was building upto around 72V and dropping, which confirmed my doubt. I removed the LVDS cable from the scalar board and detached it from its tapes too and made it free. Then removed the four screws at the sides of the frame and gently detached it to view the panel. Then used an expired credit card to insert on the sides and detach it from the bottom sheet and gently moved the panel to my bed on the other room. This movement was easy as the size of the panel was not very big and I did not have to do belly dancing! (LOL)

There was only a single diffuser sheet on top of the backlight reflector, which I removed to view the backlights that were fixed with screws and not glued to the metal body:

The reflector could be removed once the screws and two sheet spacers in the middle portion were removed and then the lamps were visible. There were six LEDs in each strip, which had the ends bent as you can see in the following picture. One strip was dead whereas the other was ok, when I checked it with the backlight LED tester, which indicated a voltage of around 35.5 consumed, which meant that the LEDs were of 6V. The strips were not pasted with any tape as six screws on each strip were good enough for holding the aluminium base tight for heat dissipation. Let us have a look:

The last picture shows that the connectors were in the middle. The wiring was in series because of which the backlight shut off as there was no current drawn by the strip and sensed by the processor in the feedback.

I phoned up the electronic spare shop in the town and told him to hang on for me and carried the defective LED lights and rushed to fetch replacement, as it was a Saturday late evening and once it was closed I might have to wait until Monday afternoon on my return from duty in the hospital. Then re-fixed the reflector with screws and put the diffuser sheet on top and then moved the panel onto the top and fixed the frame. The frame was fixed only after ensuring that the panel was in its proper place and resting on its bed within the frame.

 

All these works were to be handled with due attention and care. Then applied power and I was glad to see the backlight lit up and I could finish the job in record time. The work was relatively very simple and I think that I have never replaced the backlight of a TV so easily before.

Mission accomplished with vigor and enthusiasm that made my week end job more than satisfactory to get qualified for entry into the collection bag!

This article was prepared for you by Parasuraman Subramanian from India. He is 74 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.

Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.

P.S-If you enjoyed reading this, 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!

You may check on his previous article on Saved One More LG Monitor Model W1643C From Dump

 

12 Comments

1. 

   tree

   September 13, 2025 at 9:36 pm

   Good article Sir. But I would like to know the technique for reducing voltage to make LED TV screens more durable (TCon-VGH-VGL).

   Likes(2)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 13, 2025 at 10:25 pm

     If the voltages are not as per required specifications for proper functioning of the panel, we won't be able to view the picture properly. Moreover, the panel or uController would go to protection mode. The only way to extend the life is to keep the backlight, contrast and brightness to minimum. Then keep the TV in good ventilated atmosphere preferably in an AC environment or at-least under a good fan. Many people do not know this basic requirement! Good question! Many thanks!

     Likes(3)Dislikes(0)

     Reply
2. 

   Albert van Bemmelen

   September 13, 2025 at 11:44 pm

   It no doubt was due to your always professional care that made this revisiting tv repair an easy follow up success! Glad that you again were able to help your practically nearby neighbor!

   Likes(1)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 14, 2025 at 2:05 pm

     Many thanks for your involved and pertinent comments, dear Albert!

     Likes(1)Dislikes(0)

     Reply
3. 

   Yogesh Panchal

   September 14, 2025 at 1:54 am

   Good Job! Sir
   We become more confident when we hear that spares are available at a location near us.

   Likes(2)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 14, 2025 at 2:09 pm

     Very true! I have only two electronic shops in my town. One gets spares from a 24 KM away place as he stays there and comes to his shop daily. That is an advantage, as the shop at that place is very large and stock most of the spares and is also like a wholesaler. The other guy here gets it from main suppliers and would also help us. I have to hunt for spares elsewhere only when these two turn down there thumbs! Many thanks, dear Yogesh Bhai!

     Likes(2)Dislikes(0)

     Reply
4. 

   Mark J

   September 14, 2025 at 2:38 am

   Parasuraman great repair job once again.Thank you for sharing.

   Likes(1)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 14, 2025 at 2:09 pm

     Many thanks, dear Mark!

     Likes(0)Dislikes(0)

     Reply
5. 

   Mark

   September 14, 2025 at 8:31 am

   Well done Parasuraman

   Likes(1)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 14, 2025 at 2:10 pm

     Thanks, dear Mark!

     Likes(0)Dislikes(0)

     Reply
6. 

   Muykit

   September 17, 2025 at 3:40 pm

   If I understand you well, earlier-on the tv had its power supply system repaired, or its components mostly replaced for that matter. As that is your domain we looked foward to the repair to serve its intended purpose with dedicated reliability. However, on initially thinking that it had been brought back seven months down the line for repair of a repeated SMPS failure, on the contrary, it was failed backlight, the least of my expectation,

   Likes(1)Dislikes(0)

   Reply
   • 

     Parasuraman S

     September 19, 2025 at 4:36 pm

     Many thanks for your analytical comments!

     Likes(0)Dislikes(0)

     Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.