Hello, I collect old (relatively speaking) computers, and I recently acquired an Epson HX-20 laptop. It worked fine for a while, but now the display has some problems. It looks like maybe the display driver is refreshing the screen improperly--I see a bunch of flickering vertical lines. After the computer has been off for a while, when I turn it on the display works fine for about a minute, and then goes bad. Does anyone know what's wrong with the unit, or where I can get a schematic? Thanks, Garrett