Sony BRAVIA KDL-52W4100 52 in. LCD HDTV Logo
Anonymous Posted on Jan 11, 2012

I have a Sony KDL 52w4100 LCD tv. When I turn the TV on, all i get is a blank screen, and no sound.

Before, I had some colored bars running vertically on the right side of the screen. I replaced the tcon board, and now the lines are gone, but the screen is still blank. I use to be able to get audio before I replaced the tcon board, but now I can't seem to get audio from any source. Please help with any advice or suggestions, thanks.

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  • Anonymous Jan 16, 2012

    Hi Sonny Berry, thanks for the reply. Yes, my tcon board said "404652ASNC6LV3.7" but al i could find to replace it was a "404652ASNC6LV4.5". So i did install a different version of the board. I will try to find the V3.7 and see if that helps.

    But looking at the board, where would i find the number designations you mentioned?

  • Anonymous Jan 24, 2012

    I REALLY appreciate your good info Sonny!

    Here's what I've done so far:
    1) replaced tcon with incorrect V4.5 board; eliminated colored bars, still no image
    2) replaced main/BU board: got image back, yay =) But faint colored bar returned. This time, different color and slimmer, but same location as original.
    3) replaced ORIGINAL V3.7 board: TV would not turn on, red standby light blinks 14 times
    4) replaced tcon board with DIFFERENT V3.7 board: same 14 red blinks.

    So with the V4.5 and the new BU board, i get a normal working TV, except for a 2" faint pink vertical bar on the right side of the screen.

    I guess this is still "need proper tcon board" issue, and would like to know how to figure out which part number or Sony number board i need to find. I can't seem to find the number you posted anywhere on the boards i have though.
    How do i find what number i need??

  • Anonymous Jan 25, 2012

    I didn't try to clean the ribbon connectors, but I did swap them around to see if they were a problem. No difference.

    So is the 185713211 different than a V3.7 board, or different names for the same thing?

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Sonny Berry

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  • Sony Master 8,617 Answers
  • Posted on Jan 16, 2012
Sonny Berry
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Tad G chances are you installed the wrong Tconn as that model used two T con boards both look identical but they are not interchangeable the two types were part numbers 185724011 and 185713211 I can assist with determining which version you have

  • Sonny Berry
    Sonny Berry Jan 21, 2012

    The other number that will cross to your Tcon is the LJ94-02254F thats the correct Tconn. or sony part 185713211

  • Sonny Berry
    Sonny Berry Jan 25, 2012

    the number 185713211 wont be on the board itself but thats the sony part number for the correct version Tconn. Also often just cleaning the ribbon contacts for the TCON connectors with a pencil eraser will solve any ghost images

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5 Related Answers

Anonymous

  • 2 Answers
  • Posted on Sep 04, 2009

SOURCE: Sony Bravia KDL-46V3000

turm on the tv for at least 24 hours with rf signal it will automatically get ok.

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Anonymous

  • 1 Answer
  • Posted on Oct 05, 2009

SOURCE: How do I reset a Somy bravia KDL-52W4100 back to

While holding down the UP arrow key, press the power button. The TV will turn off and back on and reset to factory default settings. Hope this helps

Anonymous

  • 1 Answer
  • Posted on Nov 24, 2009

SOURCE: 12 little horizontal lines in Sony Bravia KDL-52W4100

we have the same exact tv and it is not even a year old. we are told that it is the display panel and it is a well known problem with this tv. we were also told that there is a shortage of these parts. they had 283 on order, but only received 35. you need to call sony and tell them that you have this problem. they should warranty this for you even if your tv is 3 months past the warranty period. since this is a well known problem with this tv, keep on them.

Testimonial: "It in fact was a part of the lcd panel...the t-con board. I was able to research it and bought a box of parts off of a tv like mine and fixed it. Ron"

Anonymous

  • 1284 Answers
  • Posted on Dec 02, 2009

SOURCE: sony bravia kdl 32l4000 - color bars running vertically on screen

In most cases is the screen is covered with vertical lines all the way accross the screen then the T-Con module is at fault. The t-con board is replaceable without having to replace the entire LCD panel which would usually make it cheaper than replacing the TV. The part number I come up with is 1-857-213-11. Please take a moment to rate my answer. Thanks...

Anonymous

  • 1779 Answers
  • Posted on Nov 19, 2010

SOURCE: WHERE CAN I BUY A SONY T-CON BOARD PART NUMBER

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.

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