While video taping my sons game today the video randomly went blurry and there is a vertical line going across the screen what is this caused by and how do we fix it

To clarify, are the 3 black lines horizontal (left to right across entire width of screen)? or are the 3 black lines vertical (top to bottom across entire height of screen)?

Horizontal lines are almost always the result of a failed panel, and no board replacement will fix the issue.

Vertical lines such as you have described (only 3) are probably also a bad panel. If the black lines were evenly spaced in a repeating pattern, it could be a mainboard or TCONN board.

Has this panel been cracked? or perhaps cleaned recently with too much water or cleaning solvent that has gotten the screen wet?

You may have to sell the TV for parts.

There are two reasons for this fault. A fault smoothing capacitor at the video output voltage rail, or excess of screen voltage. These lines are called 'vertical retrace lines' technically. Check this link for more details. It has a post, which have information regarding this fault. Go to older posts there.

The problem is the LCD panel went bad, it can't be repaired, you have to replace it.

This is caused due to random falure of vertical scan circuits. It generally is caused by dried out capacitors or bad driver IC. Unfortunately it will get worse. If you fail to turn the TV off quickly you will burn a permenant horizontal line on the tube. Trip to the repair shop I am afraid.

The machine is overheating and the graphics chip on the main board is acting up cause of it. Make sure there is no dust or dirt blocking the air vents that would cause the system to heat up more then normal.

If that doesn't do it then maybe think about getting a cooler for the system, here is a website that talks about a few of them. Click here.

If that doesn't help then your mainboard is going bad and would need to be replaced.

This is usually caused by bad capacitors in the vertical circuit. If you have an electronics background you should be able to find the defective ones with an ESR tester .

Im thinking your tape path is out of alignment.

it happens if there is moist or dust or sand inside the ds so breath INWARDS through the L or R buttons but dont pull too hard but **** as much as you can until it becomes alright plus keep doing it ... it took me 10 mins to get it right

go to the sony service center for replacing the ccd image sensor....cause it is already damage l know it is free for replacing that sensor cause of production error of the sensor....

The several thin white lines at the top of the screen is the warning that the vertical output IC is not getting the boost voltage it needs to run correctly. The IC cannot operate for long like that and shorts out inside, which is when the vertical collapses altogether and you get the thin white line through the center of the screen. The good news for your son is that he had nothing to do with that, and it has nothing to do with the cable F connector. The set needs to be serviced by an experienced tech who will restore the boost supply and replace the vertical output IC, and when I do that I charge $75 but techs in your area will vary, so be sure to ask around.