Comments on: No Display In Sony LED TV Repaired (Solved By Masking Pins)

By: nader bahrami

nader bahrami — Sun, 08 Dec 2019 20:08:32 +0000

Dear friend
mr.parasuraman
Special thanks to Sony for bringing this flaw to TV
Explain which data is interrupted and why it is not difficult to interrupt it. Thank you
nader

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By: kingsley

kingsley — Wed, 16 Oct 2019 04:06:25 +0000

please i want to know more about how to repair decoders if you have the Technics

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By: Parasuraman S

Parasuraman S — Fri, 11 Oct 2019 14:04:34 +0000

In reply to Henry.

As mentioned by me in the article, I consulted my expert techie friends, who confirmed that the voltages are OK for the model. These guys have the practice of recording various voltages and several of them have even circuit diagrams and schematics of T-con Boards, mother boards and panels. Though they share these details, I have not asked for the schematics as it's embarrassing!

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By: Henry

Henry — Fri, 11 Oct 2019 06:36:20 +0000

I have heard about this unorthodox method as well, it seems rather strange but at the same time it also appears to be working.
However, I do not understand the reasoning for it and still waiting for somebody to shine more light on it.
My question to Parasuraman, though. In the article above you mentioned checking various voltage levels on T-con board (VGH, VGL, AVDD, VDD, etc.) and founding them "to be normal". How do you know what the normal voltage level should be expected on those test points? Did you have a service manual for that TV model or are these voltages are common and typical for all T-cons?

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By: Robert Calk Jr.

Robert Calk Jr. — Wed, 09 Oct 2019 02:19:23 +0000

Good job, Parasuraman! I read about that technique somewhere but I can't remember where I read about it right now.

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By: Axl Law

Axl Law — Mon, 07 Oct 2019 19:38:47 +0000

In reply to Tayo.

To prevent contact

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By: Laron Locklear

Laron Locklear — Mon, 07 Oct 2019 15:19:15 +0000

In reply to Tayo.

I have the same question in reference to blanked pins with paper

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By: Parasuraman S

Parasuraman S — Mon, 07 Oct 2019 14:55:18 +0000

In reply to Albert van Bemmelen.

These are some basic things any technicians do here. There are guys who by-pass the scaler board of the panel and even replace or by-pass the mosfets on the panel!

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By: Parasuraman S

Parasuraman S — Mon, 07 Oct 2019 14:52:59 +0000

In reply to Tayo.

Yes, masked the pins (as mentioned in the heading);i.e. in a way cut the data path!

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By: Albert van Bemmelen

Albert van Bemmelen — Mon, 07 Oct 2019 13:36:56 +0000

Your level of repair on measuring and checking the VGH,VGL,VCOM,AVDD voltages and masking certain T-CON connector pins, is incredible and something I never heard about! As soon as you start publishing your own e-book with the knowledge you have about servicing and repairing CRT- and modern LCD CTV's I better buy it to keep up! This article was just to fast and short for me. It raises more questions I never new existed.

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