My tv is 2 years old and in the last month or so in the middle of a show the screen will go black and a red line runs down the middle and it lasts for about 5 min and a little pop sound and the picture comes on again this morning it happend and after about 10 min a loud pop and the tv stoped working.

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Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
Screen-shots to defective LCD and Plasma panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.

A defective display panel.

You have a CCFL lamp that is failing in the panel, time for a new TV

It is going to be one of two basic issues:

1. There is a poor connection somewhere in the set--either with a plug or cable or on one of the boards.

2. There is a board that is beginning to fail causing this.

Either would require a shop and may or may not be worth the cause.

Having seen hundreds of these sets all are more prone to flaky problems than the older sets and average life span is 3-5 years.

Shop I work for 80% of them are 2 years old or less.

If problem began shortly after set was moved or relocated I would lean towards a bad connection somewhere.

The tv T-CON board it is dying to causes this problems.This T-CON board sit in the middle at the bottom of the tv plasma screen panel.Try website like Ebay.com to buy a whloe new refurbish T-CON board for the replacement.

I have the same issue. Bought the TV 1/08 and it started showing those exact symptoms about 3-4 months ago. It generally progresses and gets worse. You can try to fix it as it's some kind of TAB connector issue, or keep calling Sony so that the 52" owners of the XBR4 and 5 series get the extended warranty just like the 46" owners received for the same series. If enough of us keep calling, they'll have to act.

I have a 3 year old TV with the same problem as shema_ross.

sounds like the place you took it to get servicer turned up the screen control when you had no picture problem that was a no vertical causeing a vertical line. but the service center let it run too long causing the line to burn in the tube. very bad for a repair center to do this. cant believe the got you for 600. thats well overboard. now you got a blue convergance problem because its erroring out durrent the blue reading in the test. what you need is to take off the screen turn on the tv. look in each tube for that line. now you can tell what tube needs replaced. then check convergance ic's they are big black ic's that stand up and mounted on a heat sync for cracked solder. might want to go ahead and solder them anyways in case you cant see or dont know what your lookin at. also check all the resisters in that area for burns. if that does not fix your problem, try replacing the ic's using mcm electronics. they are on the web. and the part number from the front of the ics.

If the lines are thin and close together running horizontally, it may be the vertical driver, but that usually takes out the resistor and sometimes the diode in the B+ for the vert. Also you must replace the caps that caused the problem in the first place.

have 3" black line in the middle of picture