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Re: 42 in LG red dot like static on my screen still able...
Hi there. I don't know if you've already solved this issue, but If it's only 3 months old, contact LG Technical for Service/Repair as it will still be under warranty. It sounds like a hardware fault and would be better for you to get it done for free rather than have someone mess around with it.
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If your using a tuner for your TV channels and you are using component video cables make sure that the red cable is not plugged into the audio socket. red blue and green cables should all be plugged into the "component" input on the tv not audio.
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. Hope it works.
I think I have a good idea of what you're experiencing.
Our minds are so set in the low-def mode that when those extra lines are filled in for high-def it looks like a bunch of dots. Notice everything is so much more clear? I thought the same thing when I watched my first blu-ray disc.
Watch something in high-def and then go back to standard immediately after. You'll notice that you can't get near as much detail off of the low-def.
Those dots are your mind trying to put high-def into low def.
Hope this helps; please rate my solution accordingly
This problem (known as sparkles) can be cured by adjusting the ramp control on the Y-Sustain board. If this does not cure the dots then there is a software remedy for the control board which an LG repair centre could fix. Failing that a replacement board is required. The orbitor & whitewash are like screen savers to help to prevent a screen burn from a permanently displayed image.
The diffusion is slightly out of adjusment. This timing adjustment is difficult and on a single scan LG plasma the proper operation requires voltage settings first, then a scope to finalize the adjustment. I have good luck with this alignment by eye but have had alot of practice. This will require taking the back off and a person with the technical background to set this alignment properly. Sorry no easy fix.