My 52inch xbr4 tv is 2 years old. Intermitently over past 2 months, when I first turned it on, I get thin vertical lines and double imaging especially over left half of screen. After a few minutes it would clear up. Now problem last longer, especially yesterday lasted 4 hours. I thought it was cable but repair man came today, disconnected box and problem remained on screen, even when drop down input button is presed?

IF it is still under warranty, take it in to be replaced.

bad power circuit may cause such problems.

may be power ic or bad capacitors.....

We have a SONY XBR4 and we are experiencing the same issues. When you turn on the TV, the right side is dark, then there is shadowing with movements. After about 15 minutes the picture is fine. Sometime shortly after you will get a dark area in the middle of the screen (this doesn't happen all the time). I called SONY, they were not helpful at all. They told me because the TV was not under warranty - it is only a year and a half old, they couldn't do anything for me. We had one of their service people come out to look at it. They basically told us its the panel and it has to be replaced. The cost is $2000. NEVER BUY SONY AGAIN!!! You might as well go and buy a new TV.

either a bad buffer pcb or display panel, 12 month warranty call panasonic quick

It can be replaced, but it is probably going to cost you more then the cost of a new TV to do it.

Read the tech tip I wrote on this very subject.

http://www.fixya.com/support/r3831376-when_cracked_lcd_led_or_plasma_tv

I have a 46 inch , Sony XBR 4 tv . The past week there has colored vertical lines that appear on the screen for about 10 minutes . Then they go away . What is the problem and solution?

You are going to find it is a LCD panel problem. I am sure that they will take care of you. But also realize that this could have happen to any brand of LCD panel and you will probably not have any other panel issues once it is fixed.
I feel your pain,
Skyassoc

The only logical solution for the problems people are having for the toshiba regza's tv's is to get into a class action law suite..., they contiue to sell tv's with defective parts and refuse to help the customer that spent large cash to find out they last if your lucky 2.5 years, they are junk and anyone with one will soon find out./.......

Had this same issue on right side of 52" about 1 inch from side but had 3 vertical lines that disappeared after 40 minutes. Have Samsung LNT5265FX/XXA and about 16 months old. LCD Panel itself had to be replaced to fix it, fortunately had extended service plan

Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok