Flickering Pixels on Plasma

I would say you have a bad cable

If pixels are gone on all channels - Exchange it
Can't fix it yourself unless you are tv technician
It is quite common for few pixels to be dead but that is usualy not noticable

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

It depends on the size,location and how many dead pixels. If remember less that 5 they won't do nothing about them. Call the warranty people and find out. they will for the location, size of pixel and quantities. Good luck to you.
Nour Sabre

defective plasma pdp display

I had the same problem a few months after buying the TV, called LG and they sent a tech to replace two boards in the tv. No further problems since.

this happens because of panel conditioning. as the panel ages it requires different voltages to produce the picture.it takes about 1000 hrs before it has conditioned. it is a simple adjustment a tech can do for you. when this adjustment is made no other adjustment will be needed for this problem.

try to adjust Vs & Vsc within 5% of their spec on the power supply board when you notice the problem.

hey, i had this problem with a CRT television once. My subwoofer would cause the same issue in that TV. There is a rather large magnet in the subwoofer that creates a field that will mess your TV up if it's too close to it. not sure if the same applies to the plasma, but i'd definately move it more than 5 feet away from the screen. sometimes it takes 24hrs or so for the tv to repair itself after doing so. hope this helps.

You need to adjust the panel voltages, adjust the VS voltage to around 186 volts, if that doesn't change it then adjust the V-Scan voltage down, turn the unit on and apply a video source to it, and while adjusting the voltages look at the screen and you should be abe to watch the video noise fade out.