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Neil Ericson Erni Posted on Nov 28, 2016
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Sony bravia kdl46bx420 colored lines across screen LCD panel or Tcon board?

The lines are bluish in color and appear to be transparent which are on top of the images. At first, the lines are not noticeable then they started appearing more. Could this be a bad lcd or a tcon board? Been doing research on google but still can't confirm if it's just a board or the panel.

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Anonymous

  • 1 Answer
  • Posted on Oct 08, 2008

SOURCE: Sony Bravia KLV-40U100M-screen is distorted, overlay or various vertical lines

The resolution on this was to check the surge protector the television was plugged into. Once we unplugged and plugged into another surge protector, the screen went back to normal and the appearance was great. We believe this was due to one of the resistors within the surge protector may have become faulty.




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Anonymous

  • 210 Answers
  • Posted on Oct 01, 2009

SOURCE: My SOny Bravia 40 inch LCD TV has a vertical line

Hi,

It could be 1 of 4 things:
1. One of the ribbon cables has worked itself loose (Simple Fix)
2. One of the assembly boards maybe faulty
3. The driver board which feeds the panel maybe faulty
4. The panel is faulty

The driver board in the UK costs approx £70 and approx £35-70 to fit it if this is the fault.

All other parts are between £80-160 and approx £35-70 to fit it if this is the fault.

The panel will cost approx 50-75% of what the TV was worth when you bought it - "Repair versus Replacement"

Thanks

protvrepair

John Long

  • 153 Answers
  • Posted on Jul 22, 2010

SOURCE: sony bravia lcd

Sounds like a possible T-con board failure. Which would need to be done by experienced tv repairman

Anonymous

  • 1 Answer
  • Posted on Jan 07, 2011

SOURCE: Sony Bravia LCD KDL 46V4100 has distortion with

I have this exact same problem on my same model TV. It started just before Christmas. Have you been able to find any resolution?

Anonymous

  • 1 Answer
  • Posted on Jul 28, 2011

SOURCE: I have a sony Bravia KDL-52W3000 LCD tv. Approx.

I have the same tv with the same problem. My tv is about 3 1/2 years old. I took it to the shop yesterday and today they told me that I had a bad lcd panel and a bad FL1 circuit board. They also told me it was going to be $3800.00 dollars to fix. I am now on my way to buy another tv, needless to say it will not be a Sony. Sony knows about this problem and refuse to do anything about it. Good luck.

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You will want to check with any extended warranty company you might have, or Sony's part website for the availability of the TCON board.

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I have a Sony Bravia LCD 46". The set is 1 year old. When I turn the set on in the morning the colors are blurry and run across the screen. This lasts no more than a minute , it just started doing this for...
Could be 2 things:

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Option 1: replacing the main board will run you a few hundred bucks for the Board and $300 in labor (or so) to get it installed.

Option 2: replacing the TCON means you might have to replace the whole screen (some TCONs are not available separately). A quick phone call or visit to Sony's part website will be able to determine which you need.

If you need to replace the screen, buy a new tv. The panels are amazingly, painfully expensive.

Now, there's a way to test which one is causing it, but you'll need to be quick.

For this experiment you will need: a screwdriver, a hair dryer, and some guts.

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