Hacking a few probs with my ds...

[abridgedravemast]

first of all my L button doesnt work, nay one know how to fix that?
seccond every now and then the top screen goes blank but i dont mind as it goes away if i move the screen about a bit
and last of all my A button feels loose, does anyone know how to fix these, the main prob is the L Trigger as i need that alot.

 

[xcalibur]

If anything stops working properly, trying blowing it.
Which DS do you have? Lite or Phat?