My DS lite started making a loud very high pitched monotone noise. Is there anything I can do? I have the required tools to open it and everything. It's really irritating and its been giving me a headache. It is still under warranty but I'm not sure if the warranty covers this. I might have to sell it used and buy a new one as a last resort. I hate it when electronic equipment does that. The last time this happened was to an electronic jap-eng dictionary which I stepped on accidentally so it gave me an excuse to buy another one.