I'm getting a blue haze at the bottom left on my Sony Wega.What is it?????It shows up on all settings,channels and inputs.

How large an area are we talking? Could it be an obstruction (dust) on one part of the light engine?

It's about 2feet by .5 feet i the very bottm on the left side.If it is dust ,am I able to fix it myself???

My T.V. is dying.The guys from the shop say that it is the main projector that is going.Good news is that I bought the extra warranty from Best Buy and either they are going to repair it,or (fingers crossed) they will replace it.Since the set is 3 years old I hope to have it replaced with an 60" XBR.