Recently, my GameBoy Color has been acting up, specifically with the speaker. I usually run the thing using a power supply(I HATE wasting batteries), but recently, after I switched a cartridge(I did the proper procedure for the cartridge switch), the speaker has been emitting a VERY LOUD buzzing sound that is so loud, it overpowers all of the game's audio and garbles it. Previously, there was a buzzing sound, but it was really muffled(unless I used headphones... oh God, I don't want to hear the GameBoy Color's audio output now through the headphone port), so it wasn't bothersome. But now, it's gotten EXTREMELY LOUD, and shutting the system off for a while before turning it back on doesn't fix the problem. I have to run the system on batteries not to get the buzzing. The buzzing actually sounds like those old toaster-ovens when you give 'em power, but MUCH louder. I don't know if something broke, but I don't want to use the thing with batteries all the time.
Another thing: has anyone managed to fit a GameBoy Advance SP backlight in their GameBoy Color? If so, how did you manage? There's a broken backlit GameBoy Advance SP I can pick up if I can get a step-by-step procedure on how to backlight my GameBoy Color. Otherwise, is there a way to frontlight the thing using 2 white LEDs?
EDIT: OH MY GOD!!!! I nearly fell off my chair when I turned the GameBoy Color on with a power supply and headphones plugged in. IT SOUNDS LIKE SOMEONE'S RUNNING AN ELECTRIC CURRENT THROUGH MY EARS! WTF? What's the matter with this thing???