DS Lite cannot turned on but can be charged.

Hi, i just signing up here. So, i have a ds lite that already dead for many years. Atm i was playing normally and suddenly turned off for no reason, and cannot turned on anymore. Then i brought it to service center and it said i need to replace the battery, so i replaced it. And then when it came back, i played for 3 or 4 hours and it suddenly turned off again for the second time. But if you charge it, the orange light turned on and charge normally until its green. After it full, still cannot be turned on. Then i left it for years and now im going to know whats wrong with my ds. Can anyone help me with this issue? Thanks a lot.