I don't know how hopeful to be about getting a CRT rear projection TV to give good results on non-program material. They're designed to show TV video, not a computer desktop. Rear-pros always gave a "soft" image, CRTs even more than LCD/DLP, and a CRT will commonly overscan (have the edge of the image off the screen). Page 21 of your user manual, where DVI input is discussed, doesn't even mention computer input, indicating its intended purpose being the signal from a set-top box.
How well defined are the TV's own menu screens? They are the sharpest image the screen can possibly display, being internally injected as an overlay. An external source can only be as clear as or less well defined than they are. If the menus are also blurry, and the self-focus doesn't bring them in, there will be a fault in focus, or weakening of the CRTs with age.
What resolution can the screen be set to in Windows display properties?
Edited by Platypus, 10 November 2013 - 04:03 AM.