I have an LG 42LG20-UM HDTV and there are multi colored thin lines originating from mostly the top. Just started a few days ago.

SOURCE: LG Plasma TV MOdel 50PC5DC

You will definately want to call LG and have them refer you to an auth. service center for warranty repair. This is either a failed scan bd or mayber even a bad plasma panel and there is nothing simple for a problem as you describe.

SOURCE: LG hdtv picture has started to get fuzzy and it

How many years have you had the TV?

The systems wear out over a period of about 2- 4 years.

LED systems, now very expensive, have a longer life expectancy than LCD systems.

Bud Martin

• 11361 Answers
• Posted on Sep 01, 2010

SOURCE: Our 3 month old LG HDTV has developed a thin

I would contact LG ASAP to have this repair under warranty. It can be bad LCD panel which is very expensive to replace.

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

SOURCE: How can I fix a 42lg20-um with a faded screen?

The faded screen(if you mean faint image) is due to failed backlight inverter board. THe backlight is sealed behind the LCD paneland lights up the image . Replacing the inverter board should resolve the problem. In sets of this size there are usually master and slave inverters. Let me know if you wish to fix it yourself so that I can give you the instructions.

Sai.