u/OBSTBERG

Recently, my original Game Boy case from childhood broke, so I bought a new one on AliExpress. It arrived in good condition, and a friend helped me replace everything, leaving it all original except for the case, which is the one I bought. But strangely, it only reads one cartridge; it won't read the others. I cleaned it, and it tried to read them with some force, but I don't know what's wrong. Before, it read them all without any problems; now it only reads one. Either he only reads what he wants or when he wants, because there are times when he does read them. If anyone knows how to solve this problem, it would help me a lot.