Repairing a Nintendo DS Lite
This Instructable shows how to replace various components on a defective Nintendo DS Lite. Very useful is you have a broken one. I don’t have one, but sure as hell would try to repair it if I had one and it broke.
Good Luck!
Repairing a Nintendo DS Lite [link]

by Robert
"The distance is very far. I would have no doubt that you could control it from 100ft -200ft or more. ..."