Raster is solid. Picture shifts horizontally from normal to oversize then back.
Upon power up from a cold state the horizontal size will shift or jitter, f airly steadily, by about 5% from normal size to over size. Most noticeable by watching part of the caption text going off screen-like during football games. Most of the time it briefly shifts oversize then pulls back to nor mal. This action if very frequent though on power-on. As it warms up it wi ll go from a steady shifting to an intermittent state. Sometimes it will ev en stabilize to normal as the tv on-time increases. Much less frequently i t will stabilize to an oversize state. Vertical size is solid.
The raster size both vertically and horizontally is always solid. You only see the problem when video is applied. When video is applied the picture window size is solid (full screen) but the video is shifting in that window from normal to oversized.