The correct way to desolder it would be using a Hot Air Station or ChipQuik.
Since those are respectively pretty costly and difficult to find, just solder a wire as a jumper (or place a blob of solder on it, but be cautious, if you do that).
You just need to connect both sides with solder and/or wire, to effectively jumper it.
gameguy95 said:
desolder??? why would you want to take it off?
also: could you please tell me where i could buy some replacement fuses for DS or DSL? thank you if you can because i really want to stop borrowing my sister's DSL and i just don't have the $ for another DSi Flashcart when my m3i0 screwed me over after about a month or 2.
You don't necessarily need to, you can just solder over it. Obviously, if you'll have some other power-related problems this time, it won't just be a fuse, but the entire motherboard!
As for replacement fuses, you can get them on eBay (search for "DS Lite replacement fuses") pretty easily.
BTW, they're standard 500mA SMD Fuses. So you might even try to ask in an electronics shop or at RadioShack (I'm not sure if they have things like that, we don't have RadioShacks here
).