panasonic 42'' plasma ; vertical line on the display

Janath if  You have warranty better take it back and get another because it looks like you have  burned pixels .

Sorry Silva, its a driver or sustain modual thats bad.  could be an expensive repair.

It is a steady referance voltage that works  in a matrix, alonfg with the drivers.

Thankyou Larry i don't know much about plasmas/lcds but with people like you we'll learn some thanks alot. 

  This was taken from  How stuff works.

Introduction to How Plasma Displays Work

 For the past 75 years, the vast majority of televisions have been built around the same technology: the cathode ray tube (CRT).  In a CRT television, a gun fires a beam of electrons (negatively-charged particles) inside a large glass tube.  The electrons excite phosphor atoms along the wide end of the tube (the screen), which causes the phosphor atoms to light up. The television image is produced by lighting up different areas of the phosphor coating with different colors at different intensities . Cathode ray tubes produce crisp, vibrant images, but they do have a serious drawback: They are bulky. In order to increase the screen width in a CRT set, you also have to increase the length of the tube (to give the scanning electron gun room to reach all parts of the screen).  Consequently, any big-screen CRT television is going to weigh a ton and take up a sizable chunk of a room.   Recently, a new alternative has popped up on store shelves: the plasma flat panel display.  These televisions have wide screens, comparable to the largest CRT sets, but they are only about 6 inches (15 cm) thick.  Based on the information in a video signal, the television lights up thousands of tiny dots (called pixels) with a high-energy beam of electrons.  In most systems, there are three pixel colors -- red, green and blue -- which are evenly distributed on the screen.  By combining these colors in different proportions, the television can produce the entire color spectrum.  The basic idea of a plasma display is to illuminate tiny, colored fluorescent lights to form an image.  Each pixel is made up of three fluorescent lights -- a red light, a green light and a blue light.  Just like a CRT television, the plasma display varies the intensities of the different lights to produce a full range of colors.  Most plasma displays aren't technically televisions, because they don't have a television tuner.  The television tuner is the device that takes a television signal (the one coming from a cable wire, for example) and interprets it to create a video image. Like LCD monitors, plasma displays are just monitors that display a standard video signal.  To watch television on a plasma display, you have to hook it up to a separate unit that has its own television tuner, such as a VCR.  What is Plasma? The central element in a fluorescent light is a plasma, a gas made up of free-flowing ions (electrically charged atoms) and electrons (negatively charged particles). Under normal conditions, a gas is mainly made up of uncharged particles. That is, the individual gas atoms include equal numbers of protons (positively charged particles in the atom's nucleus) and electrons.  The negatively charged electrons perfectly balance the positively charged protons, so the atom has a net charge of zero. If you introduce many free electrons into the gas by establishing an electrical voltage across it, the situation changes very quickly.  The free electrons collide with the atoms, knocking loose other electrons.  With a missing electron, an atom loses its balance.  It has a net positive charge, making it an ion. In a plasma with an electrical current running through it, negatively charged particles are rushing toward the positively charged area of the plasma, and positively charged particles are rushing toward the negatively charged area.  In this mad rush, particles are constantly bumping into each other.  These collisions excite the gas atoms in the plasma, causing them to release photons of energy.   Xenon and neon atoms, the atoms used in plasma screens, release light photons when they are excited.  Mostly, these atoms release ultraviolet light photons, which are invisible to the human eye. .

Oh for sure, if you can get it exchanged, go for it, as a new panel would cost way too much. or the boards in this display are also expensive.