One of these days I'll have to bring my Lisa back to VA with me and do some diagnosis on the video circuit... when you adjust the horizontal phase first every even raster line moves, then every odd raster line. It can be adjusted to give a good picture, until the machine warms up and then it drifts a tad... very annoying.
Another problem relates to how bright the picture is... whenever something dark is displayed on the screen the size of the picture shrinks, everything gets a tad out of focus, and everything gets darker. Like the early Macs the screen is white with black text so normally the picture looks fine, but in the terminal program or if you draw a black square in a drawing document it's rather annoying.
I've replaced the caps in the PSU and video board, but haven't done much actual diagnosis yet. It does have a NOS CRT installed
-Jason