I'm sure this has happened to you or someone you know...

The L button on my Nintendo DSi stopped working...
What really bugs me is that it's always the L button never the R.
I have had a 2 DS lites and an original Nintendo DS before this one...all had the same problem.

With all my blind fury, I popped out the L button right off!

I had to remove the entire outer casing of the DS before I could put it back on.
I couldn't figure out how to put that tiny little spring that was with it...

So know I have to pull the button up every time I press it.
At least it works.