Chosen Solution
the top screen of my ds is floppy it as no resistance when closing and just swings open an slams shut
It sounds like the hinge is broken or weakened. Also, if the screen is flickering or malfunctioning it is usually cause by a damaged flex cable when the hinge gets broken. There are 2 parts you will need, the top screen, which can be aquired via ebay etc. and you’ll also need a replacement housing. If the hinge needs replacing you will actually only need one housing part, the inside topscreen part. The ds requires a triwing screwdriver to open. The step by step replacement guide on here will show you how to do it.
There’s a website for stuff like this :o http://www.Nintendorepairs.com/ I have the same problem and I just found it although I have not used it yet :T
You can get the tri wing screwdriver that Lori mentioned at nintendo screwdriver.com
