Its a failing LCD driver, not a lot you can do about it unfortunately, eventually it will get worse. Usually lines or dots are a bad driver board, but sometimes its also a bad flex cable on the LCD. Being 2 years old you probably don't have warranty, but if you do have extended warranty file a claim now, its only going to get worse, and there is no quick or easy fix.
SOURCE: Flickering dots
The symptom you described is called diffusion. A simple alignment, normally in the power supply takes care of this problem. For the nearest Authorized Service Center near you contact Toshiba online at: http://webmail.tacp.com/service/servcntr.nsf/$$Search?OpenForm Hope this helps
SOURCE: toshiba regza lcd 46x3500
This is what is known as a dead pixel. If you have a standard wide screen lcd monitor it has over 1 million pixels. It is not super un-common for one to go bad. It will either always be dark or in your case always be lit. It is not worth it to repair, and in most cases unless you have multiple dead pixels with in a square inch of screen, it is not covered under warranty either.
Each pixel is individual and the problem will most likely not spread.
SOURCE: black line
Called ghost lines or banding. I researched on toshiba thread LCD screen bad. I have same problem purchased HL196 4/07 problem appeared 1 year and 9 months ago no extended warranty. If still under warranty call toshiba. LCD screen more expensive then orginal price of TV. Should file class action lawsuit for selling defective screens. Lot of people having same problem. goforth2953
SOURCE: White, horizontal line in center with vertical striations.
55hdm71 plasma hitachi vertical lins 3 red on right side what do i do?
SOURCE: toshiba 52xf550u has distorted vertical lines
Hello,
All TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times reseating the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em.
Good luck.
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