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I am trying to repair a Sony xbr75x940d. The LCD display is completely purple. I tried replacing the t con board with no success.

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Perhaps you could Google it, there is a chance you may find it.

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SOURCE: Is the T-Con board the LCD controller? What is

Website has Sony LCD Controller 400WSC4LV0.4 for the KDL-40S2000. Other sites may also have it.

Posted on Mar 06, 2009


Shoaib Rais

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SOURCE: Repairing (replacement) Sony Ericsson XPERIA X1 LCD Display

All these videos below will help u in ur task


Posted on May 28, 2009


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SOURCE: trying to replace t-con board on a 47lg50 lcd tv,

As soon as you take the back off the set, the t-con board is located at the top middle of the set under some shielding.

Posted on Dec 08, 2009


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SOURCE: Display driver problems, sony vaio vgn-fe41s.

the green light is on but my laptop dusan't start

Posted on Mar 21, 2010

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2 Answers

Hello, I need help with my sony bravia xbr75940d.

Shine a light on screen with TV playing and if you can see some video you have either a bad LED driver circuit on Power Supply or a bad LED strip in the backlight. If bad LED Backlight it's a very complicated and time consuming repair. FYI the Model# is probably XBR75X940D.

Feb 02, 2018 | Sony Televison & Video

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Sony LCD coulor TV modelklv32nx500,soundok,backlight OK,nopicture

It could be a defective T-CON board, defective main board, or a defective display panel.

I will try a new T-CON board first, then the main board. The display panel is to expensive to replace.

Oct 31, 2017 | Sony Televison & Video

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Lcd display PLAIN RASTER

NO onscreen display at all when pressing menu? Could be t con board which may not be available without replacing completed lcd panel or main board. 32 inch tv is not expensive to replace . Shop around before putting money into this set.

Oct 02, 2013 | Sony Klv-32t550a Bravia Multi-system Lcd...

1 Answer

We are having issues with the screen. The display of our Sony Bravia KDL-40V4150 shows straight vertical lines all the way across the screen. How do we fix this issue?

Sounds like a defective T-Con board, but it is better to test it before replacement. Also there is a possibility to repair it at a lower price. You can find a company that is testing this kind of T-Con boards and repair them here:

Sep 17, 2013 | Sony Bravia KDL-40V4150 40 in. LCD HDTV

1 Answer

I started having vertical lines on my screen whick first it was only around the upper corner edge

I would suggest that you check ribbon connections between t-con and LCD panel. Also I would have you power supply checked. Unclean sources from the power supply can cause all kinds of strange video problems. If the power supply checks out fine, and the t-con/LCD panel ribbon connections are ok, I would suspect a faulty LCD panel. You can try replacing the t-con, they should be cheap enough to take the gamble. But if you don't want to gamble, get a diagnoses done on the set.

Nov 23, 2012 | Sony BRAVIA KDL-52XBR6 LCD TV

1 Answer

Screen has horizontal line and color purple

That problem is on T-CON board..

Try to replace it to fix your problem..

Feb 23, 2012 | Sony 40 KDL40EX523 LCD TV

1 Answer

I have a single purple/pink line running vertically on my 40 inch samsung lcd tv 720p it goes away usually after awhile but comes back ive tried just about everything i know to make it go away permantly...

The tv board that call the T-CON decodering board is the caused.This board sit at the middle of the bottom of the LCD screen panel.Check the cableling connections or the T-CON decodering board is dying.Tries websites like, to buy a refurbish T-CON decodering board for the replacement.

Mar 29, 2011 | Televison & Video

2 Answers

WHERE CAN I BUY A SONY T-CON BOARD PART NUMBER SONY 1-857-132-11 ? IT IS FOR A KDL-52W4100. 2" Vertical stripe problem all the way across the screen. fades in and out. If iI try resoldering the...

The part # you gave is the Control Board which sells for $668.79. The T-Con board your looking for is part of the LCD Display Panel and is not sold separately. I suggest you start by cleaning the ribbon cables from the control board to the t-con board. If that doesn't help then you had better take it in to a service center to verify which part is bad because there are no refunds, only replacement after you buy a board.

Nov 19, 2010 | Sony BRAVIA KDL-52W4100 52 in. LCD HDTV

2 Answers

Intermittent blotchy pink, purple colors. Had mother board replaced under warranty. Problem returned after 4 months. No warranty now.

Forget the previous solution. There is no optical block in an LCD tv. The problem you have is due to a faulty t-con board also known as the LCD driver board. It is relatively inexpensive and easy to replace and I can guide you with the repair if you want to do it yourself.

Jul 26, 2010 | Televison & Video

1 Answer

100 s of red blue purple lines on samsung lcd tv

More than likely the T-con board has failed.If it's available seperately it's worth repair.If not you will have to replace the entire panel w/t-con board.Very expensive for the panel.

Nov 10, 2009 | Samsung LNT5265FX 52 in. LCD Television

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