I have a strange issue with my touchscreen where when you press on the screen it will rapidly press and unpress in the location you are touching. The positioning of touch points is fine, it's just that it rapidly touches and releases which as you can imagine causes massive problems in some games but not others. I genuinely don't think the actual touchscreen hardware is damaged as the positioning is fine and it also hasn't ever been abused. Is there a firmware setting that controls the sensitivity of when the screen thinks that it has been "pressed"? As maybe this is the issue? I read someone mention about this somewhere and that they sent it back to Nintendo who reset it and it was fine. Or is it likely to be bad contacts on the touchscreen connector? I tried taking the battery out so that it reset itself but that didn't seem to help. One thing I have noticed is that using the non-standard charger that I have causes the issue even on normally functional DS Lites. The DS Lite i have is actually japanese which is why I have a 3rd party charger (I imagine plugging the japanese charger into UK sockets would blow it doesn't mention being rated for 240V?) What happens is that when the 3rd party charger is plugged into a working DS Lite then it causes these same issues and then when you unplug the charger and run on battery (or use the official uk charger) then the touchscreen goes back to normal. It's very strange - could it be some kind of weird interference? I wonder whether using such a charger for a long period of time caused the calibration of what the screen considers as "pressed" to go out of whack. It doesn't affect the whole screen usually, with parts of it being okay. Any thoughts or ideas?