Blue line across bottom of screen on a Sony LCD rear projection

Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

Check out the Sony Websites. They extended warranties on their Rear Projection TV's. I came across this website
http://sites.google.com/site/sonylcdrptvproblems/sonyrearprojectionlcdtv-opticalblock#TOC-Summary-of-Sony-warranty-extensions
If you bought your TV in Canada, check out their e-support website/news bulletin

turn down the picture level the blue line goes away

Blue streaks might have been just your video connection and problem with signaling. But, blue dots is faulty light engine, aka "optical block". The engine in this could be a defective LCD array. Very expensive, a optical block is about $850. Hope it's still under warranty. You could get a rebuilt one, possibly. Need service adjustment too. Bad problem that Sony has with these kinds of sets.

The Convergence Amp IC's are bad. You should call a good TV Tech for this repair.

take away if there was any speaker near the tv Unit. you need to demagnetize the screen using a magnet or demagnetizer.

bad optic unit block

the vertical blue lines indicate some interference from other electronic gadgets near your tv. it started showing up on my sony grand wega when i installed my wireless modem. i almost ordered a new rear projection lamp costing over $100 but decided to experiment. i first moved my desk computer farther away from the tv then isolated the wireless modem router by placing it inside a small glass - the vertical blue lines became lighter in color so i dedided to find another small glass that fit inside the first glass container then put the router in the double glass - no more blue lines and my wireless modem router still works.
do some deductive thinking to figure out what's messing up your tv and isolate the interference.
good luck!

color shadows on numbers or letters indicate a possible convergence problem.. might be a crt deflection problem.

I have the same problem. The repair guy said it's the optical engine and you may as well replace the set as pay for the repair. First time I'm glad I bought the extended warranty. That's another story. Zonieal