Hello. My LG plasma 50pc3d has had red pixels jumping around whenever there is black on the screen, but has always cleared up. Today a vertical red line appeared, 1pixel thick, running from top to bottom. Can you tell me what the cause might be and what the fix is? Jon

There are so many reasons for this fault. If you wish to get more details, check this link. It has screen-shots illustrations to faulty screens to plasma displays. You can see and compare it to your TVs' and can make sure about the faulty section circuit inside it. http://electronicshelponline.blogspot.com/
Pull up previous posts by its left sidebar, or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

This problems ur tv are having only can be two causes 1) The Y-Sustance main tuner logic board or 2)The tv Plasma screen panel itself it is slowly leaking radiaton and dying,if it is the tv plasma screen panel itself it is dying than the tv not worth repairing because by replacing the plasma screen panel itself will cost the same as a new tv itself.The Y-Sustance board-that the tuner main logic board that take in the tv incomming broadcasting signal cable.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish Y-Sustance main tuner logic board for replacement.This tv problems are 50/50 between the Y-Sustance main tuner logic board or the very exspensive plasma screen panel itself.

defective plasma pdp display

Hey mate, very common in all makes of plasma TV's. See this how to video on to fix it, the video is for a hyundia but it is the same for your TV. http://www.youtube.com/watch?v=9NPobj0_GSo
It's pretty easy, just get a soldering iron and take your time, best of luck. Bro

Sounds like a dead screen you'll need to get it repaired. Check if it is still in warranty.

The screen does not work properly .Ribbon wire fails.

if this line is in the picture, that is possible burn in screen. if you have a black bar at the top or faint white lines that come down from top this is caused by defective filters in vertical circuit or bad vertical output. mch

My 42" Samsung Plasma HDTV HP-R4252 has a 2" vertical strip of green pixels down the right side of the screen.

My 3 year warranty with Circuit City expires in Nov 2008.. so I hope I'm covered.. can't call until the morning.

Samsung said it might be a logic board problem.. but they want almost $2000 to fix. I might as well buy another TV if Circuit City can't fix it.

The TV should be under warranty. Send back. Sounds like the panel is faulty (half the value of the set).