There is a tiny line appearing on my philip plasma tv. please help

SOURCE: THICK BLUE LINE VERTICAL LINE ON SCREEN OF MY PLASMA PICTURE

IF THE LINE IS ABOUT 1INCH WIDE THE CHANCES ARE IT WILLBE YOUR PLASMA DISPLY THAT HAS GONE . WOULD BR CHEAPER TO BUY A NEW UNIT . HOWEVER TRY RINGING HITACHI EXPLAIN THE FAULT COMPLAIN THAT IT SHOULD OF LASTED LONGER THAN THE WARANTY AND SEE WHAT THEY WILL DO ABOUT IT

SOURCE: philips plasma tv model#42PF7320A/37

yeah my tv the black bar is getting bigger and bigger

SOURCE: LG flat panel plasma with red line

I had the same problem and fixed it by replacing the control board. It's a little nerve wracking, but required only simple hand tools. If you'd like to see detailed pictures of the repair check out my blog.

http://greenrenovation.wordpress.com/du-42px12xc-repair/

SOURCE: Why do i have red lines on my philips plasma tv?

if the lines are going horizontally across and look like someone took a thin magic marker and marked across the screen, you have one of two problems, either some scan ic's have failed or you have a flex cable coming loose from the panel. Either way it will require repair. If it is the flex cable the cost to repair will be beyond the tv's worth because the whole panel needs to be changed to fix this. If it turns out to be the scan ic's, they can be changed or the board the ic's are on may be changed depending on how the repair is approched by the tech. But the cost would be reasonable around 200 to 250.
Good luck

SOURCE: Philips 42" Flat Screen Plasma - blinking red light 7 times - HELP please!

Here is a photo of the board where I have removed the two from my TV. You can see the two open holes.