I got a SEGA Game Gear earlier today, I put new batteries in, put a game in and the screen came on with the game. However, there was no sound, even with the sound turned up. When i put headphones in, it just made a high-pitch static sound. Now, I still have that same problem, only that the screen is white as well, no matter what brightness I set it to, or what angle I look at it at. Please help!