Question about Mitsubishi LT-46144 46 in. LCD HDTV

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Mitsubishi 46in. LCD

I recently turned on my 46 in. Mitsubishi LCD, and it has a green vertical line approximately 1/8 of an inch thick about 3 inches from the left edge of the screen. Over the course of about 3 minutes it fades and disappears. I am concerned that one of these days the line will not disappear. Anyone have any idea what may be causing the line to appear. The digital board in the television has gone out, and been replaced twice in the 10 months I have had the television as well. The repairman that replaced it both times said that he had no idea what would cause the board to go out, but it must be something.

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  • Anonymous Feb 13, 2009

    I have the exact same problem but mine is a blue line that will not go away i had my lcd panel replaced after six months and six months and two weeks later it did the same exact thing and Mitsubishi will not help me.

  • mrego1 Feb 28, 2009

    I have the very same problem with the green vertical line about 3 inches from the edge. It goes away after ten minutes or so. My model number is the LT-46148. Will Mitsubishi send a authorized repair person or do I have to bring the tv in.

  • kpb533 Feb 28, 2009

    I have the same problem and have had the panel replaced once already about a month ago and the problem is back...I called again and hope for a new set.

  • Anonymous Mar 03, 2009

    Basically the same problem. The first time, I had lines on both sides and they replaced the panel. Now I have a line on the right side. I am out of warranty by about 20 days, but Mistubishi is now saying that they recongnize the problem and are extending the manufacturer's warranty. I would suggest you call them back and escalate if need to find out about the extension.

  • Anonymous Mar 03, 2009

    Basically the same problem with my set. The first time, I had lines on both sides of the screen. The panel was replaced under warranty in Oct 2008. I now have a line just on the right side (for now), and I am about 20 days out of warranty. However, Mitsubishi seems to be recognizing the problem and told me that they are extending the manufactuer's warranty by another year. I would suggest that you call them back.

  • ryorzins Mar 14, 2009

    I have the same problem but have not had it repaired yet. I'll let you know what the solution is when I have the TV repaired.

  • mattkey66288 Apr 13, 2009

    I am having the same problem as everyone else. I have only had my tv for 8 months. Can anyone give me the number to mitsubishi so I can contact them?

  • Anonymous May 12, 2009

    I also have a 46144 that had two vertical lines appears at each side of the display after a few months of use. Mitsubishi sent a replacement dispaly which was installed underwarranty and, now, that display also exhibits the problem. Here we go again. I here this is a somewhat common probel. After the unit heats up, the contact expand and the line(s) disappear, but who wants 20 minutes of red, green or blue lines?


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  • 53 Answers

The TCON board at the top of the panel is causing the issue. You will need to replace the whole panel.

When the set warms up, the TCON behaves. Replace the panel now to avoid what will eventually become a permanent line (if not several)

Posted on Aug 01, 2009

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