Mitsubishi WS-55807 TV "big screen dim picture" Questions

...big(display or picture will run off screen and cannot be seen)and from top to bottom the image seems to arch, kind of "stretching". It seems a bit dim and the sound seems lower than usual. I do have ...

...big for screen Hello Your TVs focus voltage has some trouble. You gets an out of focus piture now. There may be two reasons for this fault. The first one is, the focus pack trouble. The second one is ...

...BRIGHTER THE BETTER) IN FRONT OF THE THE SCREEN ('BOUT 3 INCHES)--IF YOU SEE A DIM PICTURE---BAD SCREEN AND THATS BIG BUCKS---IF STILL NO PICTURE--CIRCUIT BOARDS AND USUALLY THATS BIG BUCKS!! GOOD ...