I have a Sony Bravia tv.A vertical line appears intermitantly in the middle of the screen,it looks green in colour. Does this mean a fault on the screen?

SOURCE: Vertical green line on screen

If your set is a plasma, this can be one of two problems : either there is a loose connection (one of many, many connections) between the plasma screen and the driver board, or one of the transistor devices has blown. Try GENTLY applying pressure to the opposite ends of the TV to give it a subtle "twist" (please be careful!). Sometimes moving the set to a different location will produce the same effect. If it's still under warranty, call your dealer. Vertical stripes are a common fault with plasma technology I'm afraid! :-( Next time, go for LCD!

SOURCE: 42HDS69 42 in. Plasma has several thin green vertical lines in middle of screen

If the set is still in warranty, call for warranty service. If not and you feel comfortable working on the set, carefully open up the back and reseat all of hte cables and connectors. This can be caused by marginal connections inside the set.

Keep us posted on your progress and results.
Dan

SOURCE: Logik T.V. model LK-74 - fault: green and purple on screen

Try moving speakers away from the TV.

SOURCE: A fine green vertical line displayed on the Sony Bravia 46.

Thats a pixel data problem, there's no data being sent to that row of pixels so they don't change color. This is a pixel address registry (PAR) issue and the PAR circuits need to be serviced its usually due to open or shorted SMT components on the PAR circuits. PAR also sends data, voltage, and control to each pixel, the green line you see are pixels that have voltage but because there's no data sent too them their all green because there's no control. If the pixels have voltage but no data or control they show up as green red, blue, yellow, or whit line vertically down the LCD panel. The vertical-horizontal section of PAR are controlled by 16 to 32 bit micro-controllers which may need replacing. If its under warranty take it back if not have your local repair center fix the tv for you...

SOURCE: I have coloured vertical lines covering my Sony

I also have a 2 yr old Sony KDL32xbr4 that now has multi-colored vertical lines on the screen. I contacted Sony and they say they have "no known issue" of this sort for this model. I find this rather puzzling since I have found numerous postings on the web. They told me to try the factory reset. Whatever. Might as well have said "don't buy a Sony". 2 years! $1300 for a tv and it lasts 2 years! Makes me sick to my stomach.