Futile Attempts To Resolve Double Image In Videocon LED TV V3218 Resulted In Panel Replacement
This TV belonged to my colleague working in the hospital and was referred to me for a possible rectification of the problem that you can see in the above image (Screenshot of the video sent by him). As most of us all know, this means there are a few shorts within the panel, which could be resolved by manipulation of data tracks on the scalar or T-con Board.
After opening the TV and subjecting it to a thorough cleaning, I checked the voltages on the scalar board and found these to be normal.
On consultation with my techie friends, I tried cutting the LC1 and LC2 tracks, by removing two resistors.
But it did not resolve the issue. The next suggestion was to give VGL and VGH voltages directly to these two points by a jumper wire. I followed that too and even inverted these two without any change in the situation.
After such very time consuming futile attempts, I referred this case to my techie friend who stays around 20 KM away from my home, as he was an expert in panel bonding, repair and replacement. He too tried his best to rectify the problem by bypassing a few tracks on the main cof that goes to the panel, but in vain. Following was the net result. Please observe the top and bottom blank gaps.
Ultimately, a change of panel was the only option. After seeking approval from the customer, I agreed for this and my friend tried fitting a new LG 32” panel, but found that it was not seating properly on the frame. So, he picked up another batch of LG Panels next day from the wholesale shop. The panel was found fitting well. Why is this difference?
According to him, the panel sizes may vary slightly as these are coming from different sources. Since the panel is very fragile, we cannot take the risk of a tight fit, as the edges might break.
Here is the screenshot of the short video sent to me by the customer, as per my request. (I was not there when the TV was taken delivery by the customer directly, from my friend’s shop)
As the satisfaction did not have any reason for not jumping into the bag, it did so happily! (LOL)
This article was prepared for you by Parasuraman Subramanian from India. He is 72 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.
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You may check on his previous article on Replacement Of Edge LED In Panasonic TH40C400D
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20 Comments
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Tayo
September 15, 2022 at 9:35 am
Very well done Sir.
The customer can rest assured that you did everything economically feasible to save that panel.
Parasuraman S
September 15, 2022 at 11:46 pm
Yes, I did! Many thanks for your comments!
Albert van Bemmelen
September 15, 2022 at 12:49 pm
The many different problems these modern LCD television sets keep plaguing these repairs are bad business for any repair shop.
Parasuraman S
September 15, 2022 at 11:46 pm
Vedry true! Many thanks for your comments!
GIFT ELIJAH
September 16, 2022 at 10:38 am
Good fix, I love your never giving-up spirit, you are truly a customer satisfaction conscious techman.
Thanks for sharing
Parasuraman S
September 23, 2022 at 5:58 pm
Many thanks for your lovely comments!
Arun Kumar
September 15, 2022 at 1:16 pm
It is indeed a feather in your cap Sir,
As you did not scrap the whole TV,
Your contribution in reducing land fill is to be appreciated.
Hats off to you once again.
Parasuraman S
September 15, 2022 at 11:46 pm
Many thanks for your comments and encouragements!
Aword J Stephen
September 22, 2022 at 7:05 am
That was beautiful,I myself are trying to remove a line across the tv screen, just one single line across, the tv is showing whole but it's the line across, that the customer wants remove,
Parasuraman S
September 23, 2022 at 5:59 pm
Many thanks for your comments!
Henrique J. G. Ulbrich
September 15, 2022 at 7:52 pm
Another successful repair, and just no product going into landfill. Hats off. I always enjoy reading your maintenance reports. By the way, what the word cof means?
Parasuraman S
September 15, 2022 at 11:48 pm
Chip on film, a connector mostly with a chip on it for interacting with the panel for data transfer.
Henrique J. G. Ulbrich
September 16, 2022 at 9:06 pm
Many thanks, Parasuraman. Have a nice day (week/month and so on).
Parasuraman S
September 20, 2022 at 10:06 pm
Many thanks!
Yogesh Panchal
September 16, 2022 at 11:16 pm
Sir,
Cost of panel replacement is very High & arranging the panel is also not easy task.you are lucky here to arrange and made an effort to fit it properly with success.
Parasuraman S
September 20, 2022 at 10:07 pm
Yes, very true! Many thanks for your comments!
Waleed Rishmawi
September 19, 2022 at 3:36 pm
changing of panel is very expensive in my erea that if you can find the part. so I gave up on this kind of repair long time ago and i only replace the panel if somehow somewhere with cheap price I can find one and most of the time it is impossible. thanks for sharing and have a blessed day
Parasuraman S
September 20, 2022 at 10:08 pm
Many thanks for your comments!
Jayachandran Durganathan
September 21, 2022 at 2:01 pm
parasu sir your perseverance and probing techniques alongwith describing the service done steps makes me very happy I am looking out for panel suppliers, can you help me out with any of the panel suppliers contact details, thanks in advance.
Jayachandran Durganathan
Parasuraman S
September 23, 2022 at 6:01 pm
You may have to enquire locally with the electronic spare parts suppliers. They might be able to guide you. Many thanks for your comments!