Hey man, how you doing, i think maybe your problem would be like mine that i disassembled my psp go and assembled it back and plugged in the charged and it didn't worked, i checked the battery connector and it wasn't all the way, check it and see if its plugged all the way, if issue still continues you maybe have to buy a new battery or new motherboard, hope it helps you even though this post is going to be 4 years old ;)