DSi Guide
==L&R shoulder buttons==
The shoulder buttons on the DSi are certainly more sensative to dust and destruction than the former versions of the DS. But, when the shoulder buttons cease to work, there is a way to fix them.
=1=
Cover the shoulder button with a damp cloth. The dampness of the cloth should be as damp as, say, a drop of water in a glass of sand. So, not very damp - almost dry.
=2=
Take a can of compressed air, attatch the white straw-like, removable nozzle, and hold it up to the side of the button.
=3=
After blowing away all the dust, repeat steps 1 & 2.
==Screen==
No, I am not talking about calibration. But, I am talking about removing pesky scratches, no matter how deep (well, if it actually made a dent in the screen, I can't help you).
=1=
Whipe the screen thoroughly with Windex.
=2=
Whipe the screen *softly* with warm water.
=3=
You are finished!