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The edge ribbon connector may not be connecting (on the inside of the tv). Cure is foam strips between screen edge connecters and inside cover. Or, Memory chip (used to make the picture appear), may be bad. All flat panel tv's use a memory chip to make picture appear (it is digital after all). And if memory chips are bad, picture will have lines, jags etc. But it sounds like you have edge connecter problems. Place foam between inside cover and screen. TV may have been thrown around in shipment, and edge connecters came undone. They're very lightly soldered on some sets.
Always start at the vary center of the screen with Green. Position Red over Green, then Blue over what now will look yellow. If all is perfect except the outside, you will need to adjust "Mid-Size" until the middle is just as far off as the outside lines. Then adjust the main "Size" adustments to match. Go very slow or you can make a mess of it.
I contacted Hitachi about this problem and they were very cooperative with me. They agreed to replace the light engine. When I mentioned that I had done some reseach on the internet and saw that they repaced the light engine and covered the cost of labor for some other customers, they said that they would submit a request for the labor for the repair. As it turned out Hitachi covered the part and labor for the repair. I first contacted Hitachi in March 2009, By mid May the service-center recieved the part and performed the repair.