Hi- Ive been repairing DSs for people semi-professionally for a while now but I just got one today that has me totally stumped. The top screen is very faded and looks like a standard top screen repair job. BUT I have tried my replacement LCD screen (which I have tested on a different DSL) and the problem remains but thsi time the image on the top screen is different it appears this time as very black- the DS is not usable liek this- any suggestions? Ive tried adjusting the pots by the SL1 contact but nothing- ive tried 2 different screens- nothing. Any ideas? The connector looks fine by the way... all help appreciated!