I have using the DS for a while now but never noticed this before. Recently I dimmed the display and started to see scrolling lines (just like the TV in old times :-)). I believe that there are 3 dimmed settings and this happens only when its dimmed low or medium. If the display is full, I don’t see it - maybe its there but hard to detect. Is this something that needs to be serviced or can it be user fixable - loose contact ? I have changed DS fuse, so I know how to open it.
Thanks in advance.