I own a sony 57WS510 ( about 20 months old now). History: I have been having a blue screen problem, wherein when I cold start the TV I get a blue screen embossed on the picture for about 2 - 15 mins and then goes away. the picture is normal after that.The blue screen is more visible when I switch to a video input that is not connected to any source. Called the BB service center and then they sent a guy about 3 weeks back. The guy came looked at the problem (without even opening the backside of the TV) and said the blue tube is gone bad and needs a replacement. Good I bought the extended warranty from BB this was covered. If the blue tube is bad, will it still show me rich blue color when I watch my programs (cable/DVD)? Now: Yesterday they came to replace the Blue tube part. The guy also did the convergance settings. Since it was the daytime and my room has lot of ambient light I could not notice this much. I thought when it gets darker I will calibrate the TV using my AVIA disk. I switch the TV on around 8:30 last night and I notice the blue color more. The focus isnt sharp enough. When there is a white color or white letters(like on a closed caption) there is blue border around the white. I tried using AVIA to calibrate still I could not get it back to the original shape. Blue is not visible when I switch to video output which is not connected to any source. First I thought it could be because my component cable is not connected properly. But this happens even when I use S-Video Cable. I ran the TV for close to over 2 hours thinking it will warm up (I am sure 2 hours more than enough for the tubes to warm up) still the blue haze. This is different from the problem I had earlier. I will be calling the BB guys again soon. Meanwhile, any ideas why this is happening. I hope I explained it correct and not confuse anyone. Kumar.