Blue "sun" rays from center of tv outward - just replaced the lamp

SOURCE: KP-51HW40 Sony 51" Fades to blue screen

The service manual on page 8 shows how to adjust the Red/Blue/Green screen voltages. To get to the adjustment board, take the front speaker grill off (two screws at the bottom left and right) and set it aside. No need to disconnect any wires. Then remove the plywood board with 4 screws that exposes the screen/focus adjustments. The top 3 adjustments are for focus, and you need not mess with these. The bottom 3 adjustments are for Red/Blue/Green screen voltage rough adjustments. My screen showed red lines, so I had to turn the bottom right adjustment with a philips head screwdriver just slightly until the red gun retrace lines where no longer visible.

SOURCE: Sony Grand Wega kdf-42we655

if the model number you provided is correct, you need to look at this ASAP:
http://ciscdb.sel.sony.com/perl/news-item.pl?news_id=206&mdl=KDF50WE655

Copy and paste that link into your browser. Sony is covering the repairs for this problem, but only until the end of December, so you must hurry. Be sure to rate this solution, Thanks!

SOURCE: Blue Screen and TV shuts off

Here's a shortcut to what the blinking codes mean.
http://www.somelifeblog.com/2007/08/sony-tv-led-blinking-codes-what-does-it.html
Strange how some people have 5 blinks. Most with this problem have 8 blinks (like myself)

I still have the blue-flash-then-shutting-off problem.. (8 blinks meaning voltage error) but I did fix the blue lines.. The lines across the screen can be very easily fixed whether they're blue green or red. . No, I mean REALLY easy. Took me longer to get the cover off. Once the front cover is off it takes 10 seconds. This link was also posted recently in one of the posts below as a solution..
http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html
(My lines didn't look like the ones in the picture mine were several evenly spaced blue arcs)

After some research I believe the flash/shutting off problem means the CRT is going. I've also read that it might be the D-board and I'm not even sure that that is... But If it is indeed the CRT then I'll let you know it's very difficult to find a replacement blue CRT as this part has been discontinued.. but I did eventually find an alternate to an alternate part (yes that's the 3rd alternate !)) online for $256. Here: http://store.tv-repair-service-salinas.com/8-733-649-35.html

If you're bold enough to attempt that then good luck and please let us know if it worked.
Or another alternative is there's a whole lot of Boxing Day sales goin' on right now.

SOURCE: screen appears blue

It's the Light Engine (also called an Optical block) -very expensive.

SOURCE: Letter box picture when viewing blue ray discs on Sony BR player

All blu-ray movies are in Widescreen format. So your tv converts the picture to make it look like letterbox. There will be some movies that will have those little black bars at the bottom. There will be some movies that don't. There is nothing to worry about it is normall. 

Hope this helps