Hi, my t.v has coloured dots all over the screen, they all but go after a while but then they appear back. it sometimes last for an hour or so.
some times the whole screen will be a really good picture then these coloured dots appear again for ages then you get same old.
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Read questions and answers real customers have contributed for the 42LG50. ... Just in the last couple weeks my LG 42inch LCD Tv which is 5 years old has been .... If there are problems with the images shown on the screen, then we may .... that shipped with the TV when it was new, to cover the opening left behind after
This is a common fault on all LG sets with few people offering any solutions. I can offer a solution that could remove 95% if not 100% of the dots. Remove the back of the set, there are about 40 screws. On the left hand side on a circuit board you will see 3 or 4 blue plastic boxes with yellow screw adjusters in them. The only 2 you are interested in are VR3 "setup" and VR2 "setdn". Mark the location with a marker pen so that you know where the factory settings were. Then turn VR3 fully clockwise. If this does not get rid completely do the same with VR2. This worked for me today, I was about to throw the TV away but I now have a 95% improved screen, sharper and more vibrant picture and saved hundreds. It only took about 20 minutes to do too. Hope it works.
If the Video (Picture/Pix) is gone but you can hear the Audio (sound), then it could mean the YSUS PCB Assembly is gone/kaput/finish. Can replace the PCB, not repair the PCB due to timing circuitry involve. Cost maybe roughly $500 depending where you located. The PCB is located on the left hand side of your TV when you are facing the back (Back open). Might find 3-4 brown flex membrane connecting to the plasma panel. The PCB has a silver or black aluminum heatsink (big) on it. Good Luck.