

Help! My first Gameboy repair
So I had a Gameboy as a kid and recently as a teenager my mother brought it up to me. It had battery corrosion but I think I cleaned all of that off with vinegar and I put it back together popped some batteries in and sat down to play some pokemon gold but when I switched it on it didn't turn on. The batteries work I know that for sure and they're AAs. So what am I missing?