Nintendo DS Lite Console "hairline lines" Questions

...down from the top of the bottom viewing screen. The "break" is not all the way through...not even a hairline crack, just visible when playing. My son says that sometimes, not always, when playing the ...

...ds lite. It has a thin line on the bottom screen now. It is not a complete break...not even a hairline crack...Just visible on the screen about half way over and about 1/4" down. My son says ...

...has just suffered from an unplugged jack or bad connection. The ultimate problem could also be a hairline crack in the board across traces which is difficult to find, but most of the time ...

lines were squiggly(keep in mind at this time I did not have the all the screws to the casing in Only the screws on the heat sinks with the new washers were screwed in). Then I turned the box off then

...lines up an down and bottom screen is blank but worked before i replaced the case dont look like anything wrong with bottom cable. i think i can see a hairline crack on the top screens cable pretty ...