Plasma TV 1.2 inch bright red band down left side of screen (vertical) near edge. Have gotten used to it. Doubt it can be fixed. Just curious. blown cap on circuit board?

If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

replace TCON board.
see procedure at Samsung Plasma TV Repair How to Repair and Replace Main Board

The T-con board controls the picture elements on the screen. Usually replacing this board will solve the problem. If you can touch the screen and the lines disappear and later reappear, that says the screen itself is defective. The only fix is to replace the entire screen.

For a five or 7 inch band we have a fix. Six is a big problem. A vertical band is either a sync condition requiring an adjustment of one or more pots on the circuit board. Usually the condition is Horizontal and rarely up and down the screen. LED is generally very reliable and two of 3 colors within the diode in your case (one red and one green) are not working. If this TV is in Warranty, replace it as you cannot fix this yourself.

Fixed mine, myself! Black 3 inch vertical band (stripe) appeared after a cros country move on our PC-T50G10. Occasionally we would see white band with multicolored pixel width stripes. Took the risk of taking off the back to see if I could see anything. Found places on sides and bottoms where plastic like 2" flat cables could be seen. Guesstimated where the band was and found that I could flip down a black cover on one end of the cable. Tried to pull it, gently. Mistake. Realized it wouldn't one out like computer hard drive cables, so I took out the screws holding the plate on the other end (it's only an inch long). That allowed me remove the cable. Took it out, cleared away dust, put t back and closed the black over. It worked! Put the screws back in, back on and... we are happy (although I do have four extra screws!). Just be gentle.

I know this post is old,
But I had the same problem.
I was able to fix it.
Heres a write up I did on the "How To".
I added pictures and diagrams too.http://jasonkoller.blogspot.com/2011/02/lg-du-42px12x-plasma-tv-fix.html

http://www.mitsubishi-tv.com/support.html
click warranties...
Important Warranty Announcement for LCD TV Owners

this is a problem is your scan section either letf or right scan boards are bad. if its under warranty take it back if not it needs to be serviced. you can probably do it yourself.

The screen does not work properly .Ribbon wire fails.