Have a friend who has a 3ds that is intermittently faulty. Everything powers up fine but the buttons and touchscreen stop working...but not all of the time. Will see if there is a pattern but I am happy to open up and reseat connectors, replace touch screen etc. Is there any know problem and quick fix, does a particular board or connector control the buttons and touchpad? Just want to fix it up enough to trade in for a 3ds XL so cheapest fix possible. Any ideas?