i accidentaly dropped my Ds on my hardwood floor and i think it fell on the side of the DS lite power switch. i can plug it in and the little orange light turns on... but when i try to turn it on...it doesn't work...i tried taking out the battery (by the way...the little water thing has red poka-dots) and i put the battery back in but it still doesn't work...Please Help!!!
F1 and F2 fuse are inside on the mother board. check if they are blown. heres wiki page http://www.m3wiki.com/index.php/Nintendo_DS_Lite_:_Repair_a_broken_console_(blown_fuse) or maybe the power switch is damage, i recall seeing a thread on this forum, see here http://forums.afterdawn.com/thread_view.cfm/695125
If looking at the DS screens do they both look perfect, if one screen fails (is broken) it can stop the unit turning on. To go much further you will need to take the unit to pieces, check the fuses as above it will be F2 as F1 is just for charging issues.