is there a utility or something to test the NDSL mic? I don't see anything under the built-in setup programs, just calibrating the screen.. I have a NDSL that the mic seems to not be working, and I'd like to test it before cracking the case open.. Is there a mic gain feature, or meters to show the mic level? It has worked no problem before, not sure why suddenly it would stop working (this is in plants vs zombies).. EDIT: wait, I got it.. Plugging in a front headset disconnects the internal mic.. I cleaned and lifted the springy terminals by the 3.5mm headphone jack and now it works!