I have the D* HR10-250: HDMI output Sony KF-60XBR800: DVI input HR10-250 provided a HDMI to DVI cable in box. (unknown brand) Worked flawlessly for months, suddenly PQ deteriorated to a screen that is reminiscent of viewing a negative (but in color). So am back to component cables for now. Any help or advice to determine which is the culprit? The STB or Display outputs/inputs or (hopefully) an HDMI to DVI cable gone bad? Cables are not cheap hoping to deduce if there is a method of elimination whereby I can zero in on which part to focus repair funds on.