Have an LG LCD 42" flat screen probably 3-4 years

SOURCE: Red spot on LCD

My friend's TV was well out of warranty and a Sears (the retailer) tech agreed that the engine needed replacement. They called Hitachi Customer Relations who will send the part to the home at no charge. Sears did not charge for the service call, but will charge $242 for labor to install the parts and adjust the TV.

Thanks for the posts. He saved $$$$.

SOURCE: Sharp 42" flat screen LCD T.V.

You have a bad buffer ic,which is part of the lcd panel.Definiately call sharp to get it repaired.If it doesn't have a warranty,persistence through sharp will get you results.

SOURCE: vertical purple lines appear when watching tv but not dvd

You unit should be under warranty. contact the manufacture for the nearest authorized servicer.

SOURCE: Water Damaged lcd tv?

Hi there.My 3yr old son water gun our 50" lcd tv sony bravia.I nearly have a heart attack.LOL.There were black mark at the bottom of the screen and when I touch it it's moving around.I realize that it was the water.So I didn't do anything.When we don't watch tv I turn it off from the wall.I kept doing this and after two weeks I notice that the black mark has gone.I don't why>So may be you could just leave as it is...good chance it may to away itself.I hope this helps.thanks.

SOURCE: Big white blur, cloud like, Center of LCD TV

I have seen similar effects like this & it is usually due to a flaw in the screen. A replacement screen is the only cure.