What's wrong with my Bravia if at power up screen displays vertical thin lines with dark background. Power LED is green. Thanks Guys!!

SOURCE: thin vertical red line

This maybe the symptom of a bad Panel. One Vertically This line is 99% bad panel. Call your warranty provider or SONY tech support if purchased under 2 years.

Best regards
CircuitCity

SOURCE: Vertical red lines on screen

LCD correct?

There are 2 types of lines they may be showing, both requiring the replacement of the LCD Panel.

1. Delamination Lines- they are usually multiple vertical lines that do NOT flow from the top to bottom of the screen. Looks look water dripped down or something similar

2. Single/Multiple Vertical lines - This is normally 1 or maybe a few solid vertical lines that travel from Top to bottom. I belive in some cases they may only travel to the screen center.

In both cases, this will always show when the TV is ON. Even if there is no signal being input to the TV. There are other possibilities but these can be the most common. Both require a new panel.

SOURCE: Sony Bravia 46Z4100 has a thin vertical red line on the screen

I assume that when you get the line you lose the picture, if so, you have vertical collapse, either a dry joint in the vertical section or capacitors or vertical I.C., I would doubt that the scan coil would be O/C as that is rare. if you can't do it yourself I suggest taking it to a repairer, as it should be an easy fix...Hope that helps...Phil

SOURCE: Sony Bravia KDL-40S2000 thin vertical line

If the line is present in all inputs and modes, there is a problem with the LCD Panel. The only way to fix it is to replace the whole LCD Panel which is very expensive (usually around $1000+ for 40" Sony). Unless the TV in under warranty, it is usually around the same price for a new TV.

Testimonial: "Thanks for the response. The service company Sony recommended told me it was probably the screen, too, and they quoted $1000."

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...