Question about Samsung UE40B7020 40 in. LED TV

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What is t-con board

Displaying white screen and showing power only v4.04

Posted by Anonymous on

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6ya6ya

6ya staff

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Hi there,
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Posted on Jan 02, 2017

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the_housedoc

Raj Parmar

  • 9 Answers

SOURCE: Samsung lcd model la32s81b sound is good .Fault is blank screen with no display or if u want white screen.

It could be either or. More then likely it is your mother board, which is the brains of your t.v.

Posted on Feb 04, 2015

Testimonial: "Thanks for the help .the faultis not on the mainboard ,it is the fuse on the t-con board was blowm. So l replace it. The tv is ok & already delivered.thanks ."

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Lcd tv only shows white. It does have audio


T'Con board fault. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD screen are similar, irrespective of its brand and screen size.

Mar 03, 2016 | Televison & Video

1 Answer

Lg 47lv355u tv


Ok t-con board is connected to main board which is giving signal and logic supply.. If the main board failed or giving a over voltage to the t-con it possibly your T-con gone out (new) again.

To isolate the problem try to replace the main board.

Dec 05, 2012 | Televison & Video

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Phillips 42FPL7662D/05. I do not know why the tv has stopped displaying a picture. The power supply is okay. I have taken the back off, there does not seem to be any problems with any soldering. If you...


if still the sound is working but with out any picture the cause would be a screen back light failure or malfunction in the t-con board. if the totally black screen it was a failure in the back light, you will need to remove the back cover to access this part. it was located at the upper and lower portion of the panel display covered with metal shield.now if the display is only a white screen you can see it in dark room, then the cause will be a failure in the t-con board. the t-con board was mounted underneath covered with metal shield.before you come up with trouble shooting the t-con board tried first with re seat the connectors which have loose contact.hope this can help good luck.

Nov 17, 2012 | Televison & Video

1 Answer

Tv wont turn on


does the light stay or blinking and how about the screen display totally black or a white screen. you can see in a dark room if their is a white screen. if totally black screen then with sound the cause is could be bad inverter board or screen back light. if a white screen it was the t-con board not working good.

Oct 04, 2012 | Insignia NS-L32Q-10A 32 in. HD-Ready LCD...

1 Answer

M320NV SCREEN IS HALF WHITE


tried with re seat the LVDS cable at the t-con board. if can not get with re seat it could be bad t-con board.

Sep 22, 2012 | Vizio M320NV 32" 1080p 60Hz Razor LED LCD...

1 Answer

Sharp Lc-26sb24u white screen with sound


You will get a white screen when you unplug the t-con from the main board. Doing so removes power to the LCD panel. Verify that all of your voltages from the power supply are correct. If they are, I'd look at the t-con board. It sounds like there is a problem with the t-con that is pulling down the main board.

May 11, 2012 | Sharp LC Televison & Video

1 Answer

My LG led has had several problems, it started out with the left half of the screen flipping as if viewed from a mirror with the right part of the screen normal. After that, it displayed vertical colored...


This problems are a very tipical of the coded pixels on the LCD screen panel passes through the board that call the T-CON decoder board to causing this problems.Vertical colors lines display on the LCD screen panel happen by itself.Yes.The T-CON decodering board it is dying and shorting out.This T-CON decodering board sit in the middle at the botton of the LCD screen panel.Replacing this T-CON decodering board will solved this problems,if does not the LCD screen panel itself it is shorting out,than the tv it is not worth fixing,because changing the whole LCD screen panel itself it is not practical and the cost will be the same as a new tv itself.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON decodering board for the replacement.

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1 Answer

The view sonic VA1701WB display is totally white on the screen during up the computer and i check the CPU is booting up but at the same time monitor screen is totally white please reply the reason.


It can be due to:
Dead T-CON board on the LCD panel assembly due to blown fuse or just dead board.
Dead power supply on the logic board that supplys the power to the T-CON board.
Learn more here:

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

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1 Answer

I have a Planar 1910(Black) LCD from a friend. It first had a problem where it would show no display but the power LED would flash green to orange. I fixed the problem by reseting it. Now that the display...


It has white screen becuase it may not be getting the 5vdc from the logic board to the T-CON board or the board has blown fuse.
Please see http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/

Also look to see if power supply/logic bd had any bad caps also.

Aug 14, 2010 | Planar PL1910M (Black) 19 in. Flat Panel...

2 Answers

Screen stays either black or white


Replace the entire DAC board (board with power suplly going into it) for easiest solution.

Aug 19, 2009 | ViewSonic VA703mb Monitor

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