Hi there Lena. I was just reading about all the problems that you've been running into and can understand your frustration in getting the help and information that you need to correct your TV's problems. I was lucky enough to have purchased a monitor that has it's own cult-like nitch on the web and has quite a bit of technical referencing and user-to-user support. The real reason for this was that the KL-W9000 is intended to be a Commercial presentation display not a Home Theater monitor therefore none of this displays settings were held to the standards of normal consumer video display devices and I was forced into the service mode fray without any prior instruction or manual to guide me, other than a few simple navigation rules to follow. I also feel that your particular problem hits unusually close to home due to the fact that my Sony KL-W9000 50-inch LCD display is in escense the direct predecessor to your Grand Wega set. I do understand that Sony has added many specific options and features to your model that were not available to mine, but their basic architectures for displaying images are essentially identical.
I have owned my monitor for about 4 1/2 years now and in that time I have learned quite a bit about not just my set, but also how vital service mode calibration can be. Seeing what you have written here and what I have learned about you in past discussions, I know that you aren't the type that likes to blindly dive in headfirst and navigate through your sets service mode without proper instructions. I waited 4 years to order my service manual, and attribute my success to both my hardheaded determination and blind luck. However if you are willing to experiment with this mode whether you have a service manual or not, you will need to make a record of every setting that currently exists and in doing this you will create a map of these settings to guide you through this mode. The benefit of having the Sony Service Manual for your TV is that it has basic definitions for the cryptic service mode codes that you will see and should give you enough information for you to make proper changes to your set.
Now if you are looking into ISF certified calibration, more power to you! I know of many fellow KL-W9000 owners who have benefited from having an ISF technician set up their monitors, and see no reason why you shouldn't take this route, as long as you are willing to pay for it. I am sure you will probably receive the most relief by having an experienced technician certify your set as well.
Now just out of curiosity, and if you don't mind Lena, would you mind explaining your problem to me in a bit more detail. I'd like to see if maybe your problem is anything that I may have run across in the past or could go through my service manual to see if there are any settings that might help you. I read that you feel that there is some type of alignment issue with your LCD panels? Are you getting separation in your colors i.e. red, green, or blue banding or "rainbowing" on the edges of images? Is your image blurry? Has the picture fidelity diminished recently, or did picture quality suddenly decrease? If you do decide to turn to an ISF technician for help, I would be very interested in his findings on this issue as well.
I hope that you don't find my statements here too nosey, I am just an avid tweaker and am interested in solving problems or at least seeing them get solved.
Thanks for your time.
-Jeremy